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    Barbershop quartets, such as this US Navy group,sing 4-part pieces, made up of a melody line

    (normally the lead) and 3 harmony parts.

    HarmonyFrom Wikipedia, the free encyclopedia

    In music, harmony is the use of simultaneous pitches

    (tones, notes), or chords.[1] The study of harmony

    involves chords and their construction and chord

    progressions and the principles of connection that

    govern them.[2] Harmony is often said to refer to the

    "vertical" aspect of music, as distinguished from melodic

    line, or the "horizontal" aspect.[3] Counterpoint, which

    refers to the interweaving of melodic lines, and

    polyphony, which refers to the relationship of separate

    independent voices, are thus sometimes distinguished

    from harmony.

    In popular and jazz harmony, chords are named by theirroot plus various terms and characters indicating their

    qualities. In many types of music, notably baroque,

    romantic, modern and jazz, chords are often augmented

    with "tensions". A tension is an additional chord member that creates a relatively dissonant interval in

    relation to the bass. Typically, in the classical common practice period a dissonant chord (chord with

    tension) "resolves" to a consonant chord. Harmonization usually sounds pleasant to the ear when there is a

    balance between the consonant and dissonant sounds. In simple words, that occurs when there is a balance

    between "tense" and "relaxed" moments.

    Contents

    1 Etymology and definitions

    2 Historical rules3 Types4 Intervals

    5 Chords and tension6 Perception of harmony

    7 Consonance and dissonance in balance8 See also

    9 References9.1 Footnotes9.2 Notations

    10 External links

    11 Further reading

    Etymology and definitions

    The term harmony derives from the Greek (harmona), meaning "joint, agreement, concord",[4]

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    Rameau's 'Trait de l'harmonie'

    (Treatise on Harmony) from 1722.

    from the verb (harmozo), "to fit together, to join".[5] The term was often used for the whole field ofmusic, while "music" referred to the arts in general. In Ancient Greece, the term defined the combination of

    contrasted elements: a higher and lower note.[6] Nevertheless, it is unclear whether the simultaneous

    sounding of notes was part of ancient Greek musical practice; "harmona" may have merely provided a

    system of classification of the relationships between different pitches. In the Middle Ages the term was used

    to describe two pitches sounding in combination, and in the Renaissance the concept was expanded to

    denote three pitches sounding together.[6]

    It was not until the publication of Rameau's 'Trait de l'harmonie'

    (Treatise on Harmony) in 1722 that any text discussing musical practice

    made use of the term in the title, though that work is not the earliest

    record of theoretical discussion of the topic. The underlying principle

    behind these texts is that harmony sanctions harmoniousness (sounds

    that 'please') by conforming to certain pre-established compositional

    principles.[7]

    Current dictionary definitions, while attempting to give concisedescriptions, often highlight the ambiguity of the term in modern use.

    Ambiguities tend to arise from either aesthetic considerations (for

    example the view that only "pleasing" concords may be harmonious) or

    from the point of view of musical texture (distinguishing between

    "harmonic" (simultaneously sounding pitches) and "contrapuntal"

    (successively sounding tones).[7] In the words of Arnold Whittall:

    While the entire history of music theory appears to depend on just

    such a distinction between harmony and counterpoint, it is no less

    evident that developments in the nature of musical composition

    down the centuries have presumed the interdependenceat times amounting to integration, at

    other times a source of sustained tensionbetween the vertical and horizontal dimensions of

    musical space.

    [7]

    The view that modern tonal harmony in Western music began in about 1600 is commonplace in music

    theory. This is usually accounted for by the 'replacement' of horizontal (of contrapuntal) writing, common in

    the music of the Renaissance, with a new emphasis on the 'vertical' element of composed music. Modern

    theorists, however, tend to see this as an unsatisfactory generalisation. As Carl Dahlhaus puts it:

    It was not that counterpoint was supplanted by harmony (Bachs tonal counterpoint is surely no

    less polyphonic than Palestrinas modal writing) but that an older type both of counterpoint and

    of vertical technique was succeeded by a newer type. And harmony comprises not only the

    (vertical) structure of chords but also their (horizontal) movement. Like music as a whole,

    harmony is a process.

    [8][9]

    Descriptions and definitions of harmony and harmonic practice may show bias towards European (orWestern) musical traditions. For example, South Asian art music (Hindustani and Carnatic music) is

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    frequently cited as placing little emphasis on what is perceived in western practice as conventional

    'harmony'; the underlying 'harmonic' foundation for most South Asian music is the drone, a held open fifth

    (or fourth) that does not alter in pitch throughout the course of a composition.[10] Pitch simultaneity in

    particular is rarely a major consideration. Nevertheless many other considerations of pitch are relevant to the

    music, its theory and its structure, such as the complex system of Rgas, which combines both melodic and

    modal considerations and codifications within it.[11]

    So, intricate pitches combinations that sound simultaneously do occur in Indian classical musicbut they

    are rarely studied as teleological harmonic or contrapuntal progressionsas with notated Western music.

    This contrasting emphasis (with regard to Indian music in particular) manifests itself in the different

    methods of performance adopted: in Indian Music improvisation takes a major role in the structural

    framework of a piece,[12] whereas in Western Music improvisation has been uncommon since the end of the

    19th century.[13] Where it does occur in Western music (or has in the past), the improvisation either

    embellishes pre-notated music or draws from musical models previously established in notated

    compositions, and therefore use familiar harmonic schemes.[14]

    Nevertheless, emphasis on the precomposed in European art music and the written theory surrounding itshows considerable cultural bias. The Grove Dictionary of Music and Musicians (Oxford University Press)

    identifies this clearly:

    In Western culture the musics that are most dependent on improvisation, such as jazz, have

    traditionally been regarded as inferior to art music, in which pre-composition is considered

    paramount. The conception of musics that live in oral traditions as something composed with

    the use of improvisatory techniques separates them from the higher-standing works that use

    notation.

    [15]

    Yet the evolution of harmonic practice and language itself, in Western art music, is and was facilitated by

    this process of prior composition (which permitted the study and analysis by theorists and composers alike

    of individual pre-constructed works in which pitches (and to some extent rhythms) remained unchanged

    regardless of the nature of the performance).[16]

    Historical rules

    Some traditions of Western music performance, composition, and theory have specific rules of harmony.These rules are often described as based on natural properties such as Pythagorean tuning's law whole

    number ratios ("harmoniousness" being inherent in the ratios either perceptually or in themselves) or

    harmonics and resonances ("harmoniousness" being inherent in the quality of sound), with the allowable

    pitches and harmonies gaining their beauty or simplicity from their closeness to those properties. This model

    provides that the minor seventh and ninth are not dissonant (i.e., are consonant). While Pythagorean ratios

    can provide a rough approximation of perceptual harmonicity, they cannot account for cultural

    factors.[citation needed]

    Early Western religious music often features parallel perfect intervals; these intervals would preserve the

    clarity of the original plainsong. These works were created and performed in cathedrals, and made use of theresonant modes of their respective cathedrals to create harmonies. As polyphony developed, however, the

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    Close position C major triad. Play

    use of parallel intervals was slowly replaced by the English style of consonance that used thirds and sixths.

    The English style was considered to have a sweeter sound, and was better suited to polyphony in that it

    offered greater linear flexibility in part-writing. Early music also forbade usage of the tritone, as its

    dissonance was associated with the devil, and composers often went to considerable lengths, via musica

    ficta, to avoid using it. In the newer triadic harmonic system, however, the tritone became permissible, as the

    standardization of functional dissonance made its use in dominant chords desirable.

    Most harmony comes from two or more notes sounding simultaneouslybut a work can imply harmony

    with only one melodic line by using arpeggios or hocket. Many pieces from the baroque period for solo

    string instrumentssuch as Bach's Sonatas and partitas for solo violin and celloconvey subtle harmony

    through inference rather than full chordal structures. These works create a sense of harmonies by using

    arpeggiated chords and implied basslines. The implied basslines are created with low notes of short duration

    that many listeners perceive as being the bass note of a chord. (See below):

    Example of implied harmonies in J.S. Bach's Cello Suite no. 1 in G,

    BWV 1007, bars 1-2. Play or Play harmony

    Types

    Carl Dahlhaus (1990) distinguishes between coordinate and

    subordinate harmony. Subordinate harmony is the hierarchicaltonality or tonal harmony well known today. Coordinate harmony is

    the older Medieval and Renaissance tonalit ancienne, "The term is

    meant to signify that sonorities are linked one after the other without

    giving rise to the impression of a goal-directed development. A first

    chord forms a 'progression' with a second chord, and a second with a

    third. But the former chord progression is independent of the later

    one and vice versa." Coordinate harmony follows direct (adjacent)

    relationships rather than indirect as in subordinate. Interval cycles

    create symmetrical harmonies, which have been extensively used by

    the composers Alban Berg, George Perle, Arnold Schoenberg, BlaBartk, and Edgard Varse'sDensity 21.5.

    Close harmony and open harmony use close position and open position chords, respectively. See: voicing

    (music) and close and open harmony.

    Other types of harmony are based upon the intervals of the chords used in that harmony. Most chords used

    in western music are based on "tertian" harmony, or chords built with the interval of thirds. In the chord C

    Major7, C-E is a major third; E-G is a minor third; and G to B is a major third. Other types of harmony

    consist of quartal harmony and quintal harmony.

    Unison is considered a harmonic interval, just like a fifth or a third. What's unique about unison is that it is

    two identical notes being played or sung together. Most people only consider thirds and fifths and sevenths

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    Open position C major triad. Play

    to be "harmony". But, unison does count as harmony, and is very

    important in orchestration, especially. In Pop music, unison singing

    is usually called "doubling" which is what The Beatles used to do a

    lot in their early music. As a type of harmony, singing in unison or

    playing the same notes, often using different musical instruments, at

    the same time is commonly called monophonic harmonization.

    Intervals

    An interval is the relationship between two separate musical pitches.

    For example, in the melody Twinkle Twinkle Little Star, the first two

    notes (the first "twinkle") and the second two notes (the second

    "twinkle") are at the interval of one fifth. What this means is that if

    the first two notes were the pitch C, the second two notes would be the pitch "G"four scale notes, or seven

    chromatic notes (a perfect fifth), above it.

    The following are common intervals:

    Root Major third Minor third Fifth

    C E E G

    D F F A

    D F F A

    E G G B

    E G

    G BF A A C

    F A A C

    G B B D

    A C C E

    A C C E

    B D D F

    B D D F

    Therefore, the combination of notes with their specific intervals a chord creates harmony. For example,

    in a C chord, there are three notes: C, E, and G. The note C is the root. The notes E and G provide harmony,

    and in a G7 (G dominant 7th) chord, the root G with each subsequent note (in this case B, D and F) provide

    the harmony.

    In the musical scale, there are twelve pitches. Each pitch is referred to as a "degree" of the scale. The names

    A, B, C, D, E, F, and G are insignificant. The intervals, however, are not. Here is an example:

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    1 2 3 4 5 6 7 8

    C D E F G A B C

    D E F G A B C D

    As can be seen, no note always corresponds to a certain degree of the scale. The tonic, or 1st-degree note,

    can be any of the 12 notes (pitch classes) of the chromatic scale. All the other notes fall into place. For

    example, when C is the tonic, the fourth degree or subdominant is F. When D is the tonic, the fourth degree

    is G. While the note names remain constant, they may refer to different scale degrees, implying different

    intervals with respect to the tonic. The great power of this fact is that any musical work can be played or

    sung in any key. It is the same piece of music, as long as the intervals are the samethus transposing the

    melody into the corresponding key. When the intervals surpass the perfect Octave (12 semitones), these

    intervals are called compound intervals, which include particularly the 9th, 11th, and 13th Intervalswidely

    used in jazz and blues Music.

    Compound Intervals are formed and named as follows:

    2nd + Octave = 9th3rd + octave = 10th

    4th + Octave = 11th5th + octave = 12th6th + Octave = 13th7th + octave = 14th

    The reason the two numbers don't "add" correctly is that one note is counted twice. Apart from this

    categorization, intervals can also be divided into consonant and dissonant. As explained in the following

    paragraphs, consonant intervals produce a sensation of relaxation and dissonant intervals a sensation of

    tension. In tonal music, the term consonant also means "brings resolution" (to some degree at least, whereasdissonance "requires resolution").

    The consonant intervals are considered the perfect unison, octave, fifth, fourth and major and minor third

    and sixth, and their compound forms. An interval is referred to as "perfect" when the harmonic relationship

    is found in the natural overtone series (namely, the unison 1:1, octave 2:1, fifth 3:2, and fourth 4:3). The

    other basic intervals (second, third, sixth, and seventh) are called "imperfect" because the harmonic

    relationships are not found mathematically exact in the overtone series. In classical music the perfect fourth

    above the bass may be considered dissonant when its function is contrapuntal. Other intervals, the second

    and the seventh (and their compound forms) are considered Dissonant and require resolution (of the

    produced tension) and usually preparation (depending on the music style used). It should be noted that the

    effect of dissonance is perceived relatively within musical context: for example, a major seventh interval

    alone (i.e. C up to B) may be perceived as dissonant, but the same interval as part of a major seventh chord

    may sound relatively consonant. A tritone (the interval of the fourth step to the seventh step of the major

    scale, i.e. F to B) sounds very dissonant alone, but less so within the context of a dominant seventh chord

    (G7 or D7 in that example).

    Chords and tension

    Main article: Chord (music)

    Main article: Consonance and dissonance

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    In the Western tradition, in music after the seventeenth century, harmony is manipulated using chords,

    which are combinations of pitch classes. In tertian harmony, so named after the interval of a third, the

    members of chords are found and named by stacking intervals of the third, starting with the "root", then the

    "third" above the root, and the "fifth" above the root (which is a third above the third), etc. (Note that chord

    members are named after their interval above the root.) Dyads, the simplest chords, contain only two

    members (see power chords).

    A chord with three members is called a triad because it has three members, not because it is necessarily built

    in thirds (see Quartal and quintal harmony for chords built with other intervals). Depending on the size of

    the intervals being stacked, different qualities of chords are formed. In popular and jazz harmony, chords are

    named by their root plus various terms and characters indicating their qualities. To keep the nomenclature as

    simple as possible, some defaults are accepted (not tabulated here). For example, the chord members C, E,

    and G, form a C Major triad, called by default simply a C chord. In an A chord (pronounced A-flat), the

    members are A, C, and E.

    In many types of music, notably baroque, romantic, modern and jazz, chords are often augmented with

    "tensions". A tension is an additional chord member that creates a relatively dissonant interval in relation tothe bass. Following the tertian practice of building chords by stacking thirds, the simplest first tension is

    added to a triad by stacking on top of the existing root, third, and fifth, another third above the fifth, giving a

    new, potentially dissonant member the interval of a seventh away from the root and therefore called the

    "seventh" of the chord, and producing a four-note chord, called a "seventh chord".

    Depending on the widths of the individual thirds stacked to build the chord, the interval between the root

    and the seventh of the chord may be major, minor, or diminished. (The interval of an augmented seventh

    reproduces the root, and is therefore left out of the chordal nomenclature.) The nomenclature allows that, by

    default, "C7" indicates a chord with a root, third, fifth, and seventh spelled C, E, G, and B. Other types of

    seventh chords must be named more explicitly, such as "C Major 7" (spelled C, E, G, B), "C augmented 7"(here the word augmented applies to the fifth, not the seventh, spelled C, E, G, B), etc. (For a more

    complete exposition of nomenclature see Chord (music).)

    Continuing to stack thirds on top of a seventh chord produces extensions, and brings in the "extended

    tensions" or "upper tensions" (those more than an octave above the root when stacked in thirds), the ninths,

    elevenths, and thirteenths. This creates the chords named after them. (Note that except for dyads and triads,

    tertian chord types are named for the interval of the largest size and magnitude in use in the stack, not for the

    number of chord members : thus a ninth chord has five members, not nine.) Extensions beyond the thirteenth

    reproduce existing chord members and are (usually) left out of the nomenclature. Complex harmonies based

    on extended chords are found in abundance in jazz, late-romantic music, modern orchestral works, filmmusic, etc.

    Typically, in the classical Common practice period a dissonant chord (chord with tension) resolves to a

    consonant chord. Harmonization usually sounds pleasant to the ear when there is a balance between the

    consonant and dissonant sounds. In simple words, that occurs when there is a balance between "tense" and

    "relaxed" moments. For this reason, usually tension is 'prepared' and then 'resolved'.[17]

    Preparing tension means to place a series of consonant chords that lead smoothly to the dissonant chord. In

    this way the composer ensures introducing tension smoothly, without disturbing the listener. Once the piece

    reaches its sub-climax, the listener needs a moment of relaxation to clear up the tension, which is obtainedby playing a consonant chord that resolves the tension of the previous chords. The clearing of this tension

    http://en.wikipedia.org/wiki/Harmony#cite_note-Schejtman-17http://en.wikipedia.org/wiki/Harmonizationhttp://en.wikipedia.org/wiki/Common_practice_periodhttp://en.wikipedia.org/wiki/Extended_chordhttp://en.wikipedia.org/wiki/Chord_(music)http://en.wikipedia.org/wiki/Seventh_chordhttp://en.wikipedia.org/wiki/Quartal_and_quintal_harmonyhttp://en.wikipedia.org/wiki/Triad_(music)http://en.wikipedia.org/wiki/Power_chordhttp://en.wikipedia.org/wiki/Dyad_(music)http://en.wikipedia.org/wiki/Tertianhttp://en.wikipedia.org/wiki/Pitch_classhttp://en.wikipedia.org/wiki/Chord_(music)
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    The harmonious major triad is composed of

    three tones. Their frequency ratio

    corresponds approximately 6:5:4. In real

    performances, however, the third is often

    larger than 5:4. The ratio 5:4 correspondsto an interval of 386 cents, but an equally

    tempered major third is 400 cents and a

    Pythagorean third with a ratio of 81:64 is

    408 cents. Measurements of frequencies in

    good performances confirm that the size of

    the major third varies across this range and

    can even lie outside it without sounding out

    of tune. Thus, there is no simple connection

    between frequency ratios and harmonic

    function.

    usually sounds pleasant to the listener, though this is not always the case in late-nineteenth century music,

    such as Tristan und Isolde by Richard Wagner.[17]

    Perception of harmony

    Harmony is based on consonance, a concept whose definition has changed various times during the history

    of Western music. In a psychological approach, consonance is a continuous variable. Consonance can varyacross a wide range. A chord may sound consonant for various reasons.

    One is lack of perceptual roughness. Roughness happens when partials (frequency components) lie within a

    critical bandwidth, which is a measure of the ear's ability to separate different frequencies. Critical

    bandwidth lies between 2 and 3 semitones at high frequencies and becomes larger at lower frequencies. The

    roughness of two simultaneous harmonic complex tones depends on the amplitudes of the harmonics and the

    interval between the tones. The roughest interval in the chromatic scale is the minor second and its inversion

    the major seventh. For typical spectral envelopes in the central range, the second roughest interval is the

    major second and minor seventh, followed by the tritone, the minor third (major sixth), the major third

    (minor sixth) and the perfect fourth (fifth).

    The second reason is perceptual fusion. A chord fuses in

    perception if its overall spectrum is similar to a harmonic series.

    According to this definition a major triad fuses better than a

    minor triad and a major-minor seventh chord fuses better than a

    major-major seventh or minor-minor seventh. These differences

    may not be readily apparent in tempered contexts but can

    explain why major triads are generally more prevalent than

    minor triads and major-minor sevenths generally more prevalent

    than other sevenths (in spite of the dissonance of the tritone

    interval) in mainstream tonal music. Of course these

    comparisons depend on style.

    The third reason is familiarity. Chords that have often been

    heard in musical contexts tend to sound more consonant. This

    principle explains the gradual historical increase in harmonic

    complexity of Western music. For example, around 1600

    unprepared seventh chords gradually became familiar and were

    therefore gradually perceived as more consonant.

    Western music is based on major and minor triads. The reason

    why these chords are so central is that they are consonant in

    terms of both fusion and lack of roughness. they fuse because

    they include the perfect fourth/fifth interval. They lack

    roughness because they lack major and minor second intervals.

    No other combination of three tones in the chromatic scale

    satisfies these criteria.

    Consonance and dissonance in balance

    http://en.wikipedia.org/wiki/Harmonic_series_(music)http://en.wikipedia.org/wiki/Minor_sixthhttp://en.wikipedia.org/wiki/Major_sixthhttp://en.wikipedia.org/wiki/Harmony#cite_note-Schejtman-17http://en.wikipedia.org/wiki/Cent_(music)http://en.wikipedia.org/wiki/Major_chordhttp://en.wikipedia.org/wiki/File:Major_triad.svg
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    Post-nineteenth century music has evolved in the way that tension may be less often prepared and less

    formally structured than in Baroque or Classical periods, thus producing new styles such as post-romantic

    harmony, impressionism, pantonality, Jazz and Blues, where dissonance may not be prepared in the way

    seen in 'common practice' harmony. In a jazz or blues song, the tonic chord may be a dominant seventh

    chord.

    The creation and destruction of harmonic and 'statistical' tensions is essential to the maintenance

    of compositional drama. Any composition (or improvisation) which remains consistent and

    'regular' throughout is, for me, equivalent to watching a movie with only 'good guys' in it, or

    eating cottage cheese.

    Frank Zappa, "The Real Frank Zappa Book" page 181, Frank Zappa and PeterOcchiogrosso, 1990

    See also

    Chromatic chordChromatic mediantHomophony (music)

    List of musical terminologyMathematics of musical scalesMusica universalis

    Organum (polyphonic chant)Peter Westergaard's tonal theoryProlongationPhysics of music

    Tonality

    Unified fieldVoice leading

    References

    Footnotes

    1. ^ Malm, William P. (1996).Music Cultures of the Pacific, the Near East, and Asia, p.15. ISBN 0-13-182387-6.

    Third edition. "Homophonic texture...is more common in Western music, where tunes are often built on chords

    (harmonies) that move in progressions. Indeed this harmonic orientation is one of the major differences betweenWestern and much non-Western music."

    2. ^ Dahlhaus, Car. "Harmony", Grove Music Online, ed. L. Macy (accessed 24 February 2007), grovemusic.com

    (http://www.grovemusic.com/) (subscription access).

    3. ^ Jamini, Deborah (2005).Harmony and Composition: Basics to Intermediate, p.147. ISBN 1-4120-3333-0.

    4. ^ '1. Harmony' The Concise Oxford Dictionary of English Etymology in English Language Reference accessed via

    Oxford Reference Online (http://www.oxfordreference.com/) (24 February 2007)

    5. ^ Harmonia, Henry George Liddell, Robert Scott, "A Greek-English Lexicon", at Perseus

    (http://www.perseus.tufts.edu/cgi-bin/ptext?doc=Perseus%3Atext%3A1999.04.0057%3Aentry%3D%2315282)

    6. ^ ab Dahlhaus, Carl. "Harmony", Grove Music Online, ed. L. Macy (accessed 24 February 2007), grovemusic.com

    (http://www.grovemusic.com/) (subscription access).

    7. ^abc

    Arnold Whittall, The Oxford Companion to Music, ed. Alison Latham, (Oxford University Press, 2002)(accessed via [Oxford Reference Online], 16 November 2007 is gayubview=Main&entry=t114.e3144

    (http://www.oxfordreference.com/views/ENTRY.html?this) )

    http://www.oxfordreference.com/views/ENTRY.html?thishttp://en.wikipedia.org/wiki/Harmony#cite_ref-oxfordcompanion_7-2http://en.wikipedia.org/wiki/Harmony#cite_ref-oxfordcompanion_7-1http://en.wikipedia.org/wiki/Harmony#cite_ref-oxfordcompanion_7-0http://www.grovemusic.com/http://en.wikipedia.org/wiki/Grove_Dictionary_of_Music_and_Musicianshttp://en.wikipedia.org/wiki/Harmony#cite_ref-grovelead_6-1http://en.wikipedia.org/wiki/Harmony#cite_ref-grovelead_6-0http://www.perseus.tufts.edu/cgi-bin/ptext?doc=Perseus%3Atext%3A1999.04.0057%3Aentry%3D%2315282http://en.wikipedia.org/wiki/Harmony#cite_ref-5http://www.oxfordreference.com/http://en.wikipedia.org/wiki/Harmony#cite_ref-4http://en.wikipedia.org/wiki/Special:BookSources/1412033330http://en.wikipedia.org/wiki/Harmony#cite_ref-Jamini_3-0http://www.grovemusic.com/http://en.wikipedia.org/wiki/Grove_Dictionary_of_Music_and_Musicianshttp://en.wikipedia.org/wiki/Harmony#cite_ref-2http://en.wikipedia.org/wiki/Special:BookSources/0131823876http://en.wikipedia.org/wiki/Harmony#cite_ref-1http://en.wikipedia.org/wiki/Voice_leadinghttp://en.wikipedia.org/wiki/Unified_fieldhttp://en.wikipedia.org/wiki/Tonalityhttp://en.wikipedia.org/wiki/Physics_of_musichttp://en.wikipedia.org/wiki/Prolongationhttp://en.wikipedia.org/wiki/Peter_Westergaard%27s_tonal_theoryhttp://en.wikipedia.org/wiki/Organumhttp://en.wikipedia.org/wiki/Musica_universalishttp://en.wikipedia.org/wiki/Mathematics_of_musical_scaleshttp://en.wikipedia.org/wiki/List_of_musical_terminologyhttp://en.wikipedia.org/wiki/Homophony_(music)http://en.wikipedia.org/wiki/Chromatic_medianthttp://en.wikipedia.org/wiki/Chromatic_chordhttp://en.wikipedia.org/wiki/Frank_Zappahttp://en.wikipedia.org/wiki/Blueshttp://en.wikipedia.org/wiki/Jazzhttp://en.wikipedia.org/wiki/Impressionist_musichttp://en.wikipedia.org/wiki/Classical_Musichttp://en.wikipedia.org/wiki/Baroque_Music
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    8. ^ Harmony, 3: Historical development. "Carl Dahlhaus", Grove Music Online, ed. L. Macy (accessed 16 November

    2007), grovemusic.com (http://www.grovemusic.com/) (subscription access).

    9. ^ see also Whitall 'Harmony: 4. Practice and Principle', Oxford Companion to Music

    10. ^ Regula Qureshi. "India, I, 2(ii): Music and musicians: Art music", Grove Music Online, ed. L. Macy (accessed 16

    November 2007), grovemusic.com (http://www.grovemusic.com/) (subscription access). and Catherine Schmidt

    Jones, 'Listening to Indian Classical Music', Connexions, (accessed 16 November 2007) [1]

    (http://cnx.org/content/m12502/latest/)

    11. ^ Harold S. Powers/Richard Widdess. "India, III, 2: Theory and practice of classical music: Rga", Grove Music

    Online, ed. L. Macy (accessed 16 November 2007), grovemusic.com (http://www.grovemusic.com/) (subscription

    access).

    12. ^ Harold S. Powers/Richard Widdess. "India, III, 3(ii): Theory and practice of classical music: Melodic

    elaboration", Grove Music Online, ed. L. Macy (accessed 16 November 2007), grovemusic.com

    (http://www.grovemusic.com/) (subscription access).

    13. ^ Rob C. Wegman. "Improvisation, II: Western art music", Grove Music Online, ed. L. Macy (accessed 16

    November 2007), grovemusic.com (http://www.grovemusic.com/) (subscription access).

    14. ^ Robert D Levin. "Improvisation, II, 4(i): The Classical period in Western art music: Instrumental music", Grove

    Music Online, ed. L. Macy (accessed 16 November 2007), grovemusic.com (http://www.grovemusic.com/)

    (subscription access).

    15. ^ Bruno Nettl. "Improvisation, I, 2: Concepts and practices: Improvisation in musical cultures", Grove MusicOnline, ed. L. Macy (accessed 16 November 2007), grovemusic.com (http://www.grovemusic.com/) (subscription

    access).

    16. ^ see Whitall, 'Harmony'

    17. ^ ab Schejtman, Rod (2008). The Piano Encyclopedia's "Music Fundamentals eBook", p.20-43 (accessed 10 March

    2009). PianoEncyclopedia.com (http://PianoEncyclopedia.com)

    Notations

    Dahlhaus, Carl. Gjerdingen, Robert O. trans. (1990). Studies in the Origin of Harmonic Tonality,

    p. 141. Princeton University Press. ISBN 0-691-09135-8.van der Merwe, Peter (1989). Origins of the Popular Style: The Antecedents of Twentieth-CenturyPopular Music. Oxford: Clarendon Press. ISBN 0-19-316121-4.Nettles, Barrie & Graf, Richard (1997). The Chord Scale Theory and Jazz Harmony. Advance Music,

    ISBN 3-89221-056-X

    External links

    Chord Geometry - Graphical Analysis of Harmony Tool

    (http://music.princeton.edu/%7Edmitri/ChordGeometries.html)

    Interactive Lessons about harmonizing melodies and scales using different Musical Styles(http://pianoencyclopedia.com)Harmonic Progressions with demos and how to harmonize a melody (http://www.harmony.org.uk)

    General Principles of Harmony by Alan Belkin (http://alanbelkinmusic.com/bk.H/index.html)Morphogenesis of chords and scales (http://www.lamadeguido.com/morphogenesis.htm) Chords andscales classification

    A Beginner's Guide to Modal Harmony (http://www.standingstones.com/modeharm.html)Posts about traditional and jazz harmony (http://www.elsaposabio.com/musica)Sonantometry as Natural Harmony Algebra (http://sonantometry.blogspot.com)Chord Harmonization Tool (http://www.scales-chords.com/chordscalefinder.php) Online tool that

    automates chord progression analysis to identify underlying scales and related chords

    http://www.scales-chords.com/chordscalefinder.phphttp://sonantometry.blogspot.com/http://www.elsaposabio.com/musicahttp://www.standingstones.com/modeharm.htmlhttp://www.lamadeguido.com/morphogenesis.htmhttp://alanbelkinmusic.com/bk.H/index.htmlhttp://www.harmony.org.uk/http://pianoencyclopedia.com/http://music.princeton.edu/~dmitri/ChordGeometries.htmlhttp://en.wikipedia.org/wiki/Special:BookSources/389221056Xhttp://en.wikipedia.org/wiki/Special:BookSources/0193161214http://en.wikipedia.org/wiki/Special:BookSources/0691091358http://pianoencyclopedia.com/http://en.wikipedia.org/wiki/Harmony#cite_ref-Schejtman_17-1http://en.wikipedia.org/wiki/Harmony#cite_ref-Schejtman_17-0http://en.wikipedia.org/wiki/Harmony#cite_ref-16http://www.grovemusic.com/http://en.wikipedia.org/wiki/Grove_Dictionary_of_Music_and_Musicianshttp://en.wikipedia.org/wiki/Harmony#cite_ref-15http://www.grovemusic.com/http://en.wikipedia.org/wiki/Grove_Dictionary_of_Music_and_Musicianshttp://en.wikipedia.org/wiki/Harmony#cite_ref-14http://www.grovemusic.com/http://en.wikipedia.org/wiki/Grove_Dictionary_of_Music_and_Musicianshttp://en.wikipedia.org/wiki/Harmony#cite_ref-13http://www.grovemusic.com/http://en.wikipedia.org/wiki/Grove_Dictionary_of_Music_and_Musicianshttp://en.wikipedia.org/wiki/Harmony#cite_ref-12http://www.grovemusic.com/http://en.wikipedia.org/wiki/Grove_Dictionary_of_Music_and_Musicianshttp://en.wikipedia.org/wiki/Harmony#cite_ref-11http://cnx.org/content/m12502/latest/http://www.grovemusic.com/http://en.wikipedia.org/wiki/Grove_Dictionary_of_Music_and_Musicianshttp://en.wikipedia.org/wiki/Harmony#cite_ref-10http://en.wikipedia.org/wiki/Harmony#cite_ref-9http://www.grovemusic.com/http://en.wikipedia.org/wiki/Grove_Dictionary_of_Music_and_Musicianshttp://en.wikipedia.org/wiki/Harmony#cite_ref-8
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    Further reading

    Prout, Ebenezer,Harmony, its Theory and Practice (1889, revised 1901)

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    Categories: Harmony Concepts in aesthetics Perception Mental processes

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