A pentatonic scale is a musical scale (music), scale with five Musical note, notes per octave, in contrast to the heptatonic scale, which has seven notes per octave (such as the major scale and minor scale). Pentatonic scales were developed independently by many ancient civilizations and are still used in various musical styles to this day. There are two types of pentatonic scales: those with semitones (hemitonic) and those without (anhemitonic).

Types

Hemitonic and anhemitonic

Musicology commonly classifies pentatonic scales as either ''hemitonic'' or ''anhemitonic''. Hemitonic scales contain one or more semitones and anhemitonic scales do not contain semitones. (For example, in Japanese music the anhemitonic yo scale, ''yo'' scale is contrasted with the hemitonic in scale, ''in'' scale.) Hemitonic pentatonic scales are also called "ditonic scales", because the largest interval in them is the ditone (e.g., in the scale C–E–F–G–B–C, the interval found between C–E and G–B). (This should not be confused with the Ditonic scale, identical term also used by musicologists to describe a scale including only two notes.)

Major pentatonic scale

Anhemitonic pentatonic scales can be constructed in many ways. The major pentatonic scale may be thought of as a gapped or incomplete major scale, using scale tones 1, 2, 3, 5, and 6 of the major scale. One construction takes five consecutive pitches from the circle of fifths; starting on C, these are C, G, D, A, and E. Transposing the pitches to fit into one octave rearranges the pitches into the major pentatonic scale: C, D, E, G, A. : Another construction works backward: It omits two pitches from a diatonic scale. If one were to begin with a C major scale, for example, one might omit the fourth and the seventh scale degrees, F and B. The remaining notes then make up the major pentatonic scale: C, D, E, G, and A. Omitting the third and seventh degrees of the C major scale obtains the notes for another transpositionally equivalent anhemitonic pentatonic scale: F, G, A, C, D. Omitting the first and fourth degrees of the C major scale gives a third anhemitonic pentatonic scale: G, A, B, D, E. The black keys on a piano keyboard comprise a G-flat (or equivalently, F-sharp) major pentatonic scale: G-flat, A-flat, B-flat, D-flat, and E-flat, which is exploited in Chopin's Étude Op. 10, No. 5 (Chopin), black key étude. :

Minor pentatonic scale

Although various hemitonic pentatonic scales might be called ''minor'', the term is most commonly applied to the relative minor pentatonic derived from the major pentatonic, using scale tones 1, 3, 4, 5, and 7 of the natural minor scale. (It may also be considered a gapped blues scale.) The C minor pentatonic scale, the relative minor of the E-flat pentatonic scale, is C, E-flat, F, G, B-flat. The A minor pentatonic, the relative minor of C pentatonic, comprises the same tones as the C major pentatonic, starting on A, giving A, C, D, E, G. This minor pentatonic contains all three tones of an A minor triad. : The standard tuning of a guitar uses the notes of an E minor pentatonic scale: E–A–D–G–B–E, contributing to its frequency in popular music.

Japanese scale

Japanese mode is based on Phrygian mode, but use scale tones 1, 2, 4, 5, and 6 instead of scale tones 1, 3, 4, 5, and 7. :

Pentatonic scales found by running up the keys C, D, E, G and A

The five pentatonic scales found by running up the keys C, D, E, G and A are: (A minor seventh can be 7:4, 16:9, or 9:5; a major sixth can be 27:16 or 5:3. Both were chosen to minimize ratio parts.) Ricker assigned the major pentatonic scale mode I while Gilchrist assigned it mode III. cites

Relationship to diatonic modes

Each pentatonic scale found by running up the keys C, D, E, G and A can be thought of as the five scale degrees shared by three different diatonic modes with the two remaining scale degrees removed:

Intervals from tonic

Each pentatonic scale found by running up the keys C, D, E, G and A features different intervals of notes from the tonic according to the table below. Note the omission of the semitones above (m2) and below (M7) the tonic as well as the tritone (TT).

Pentatonic vs diatonic chords

While the usual diatonic major and minor chords are commonly played over the pentatonic scale, they do not naturally arise from the pentatonic scale in that they require playing the two additional notes that are omitted from the pentatonic. Instead, pentatonic chords can be constructed by taking the root, third note and fifth note in the pentatonic scale similar to the usual construction of chords in the diatonic scale, which could then be playable over all notes without including extra notes. For example, the three chords that naturally arise from the diatonic scale are the major chord, major, minor chord, minor and diminished chord, diminished chords. The three chords that naturally arise from the pentatonic scale however, are inversion (music), inversions of the diatonic minor, major and suspended chord, suspended chords as shown in the table below. In contrast to diatonic chords which stack minor thirds and major thirds, pentatonic chords stack major thirds and perfect fourths. Chords containing chromatic notes can also be constructed analogously to the diatonic scale. The augmented chord, augmented chord fulfills the remaining M3–M3 stacking sequence, while diminishing or augmenting the third note from the root produces inversions of the diminished chord similar to the construction of sus2 and sus4 chords in the diatonic scale by diminishing or augmenting the third.

Pythagorean tuning

Ben Johnston (composer), Ben Johnston gives the following Pythagorean tuning for the minor pentatonic scale: Naturals in that table are not the alphabetic series A to G without sharps and flats: Naturals are reciprocals of terms in the Harmonic series (mathematics), which are in practice multiples of a fundamental frequency. This may be derived by proceeding with the principle that historically gives the Pythagorean diatonic and chromatic scales, stacking perfect fifths with 3:2 frequency proportions (C–G–D–A–E). Considering the anhemitonic scale as a subset of a just intonation, just diatonic scale, it is tuned thus: 20:24:27:30:36 (A–C–D–E–G = ––––). Assigning precise frequency proportions to the pentatonic scales of most cultures is problematic as tuning may be variable. For example, the slendro anhemitonic scale and its modes of Java and Bali are said to approach, very roughly, an equally-tempered five-note scale, but their tunings vary dramatically from gamelan to gamelan. Composer Lou Harrison has been one of the most recent proponents and developers of new pentatonic scales based on historical models. Harrison and William Colvig tuned the slendro scale of the gamelan Si Betty to overtones 16:19:21:24:28 (––––). They tuned the Mills gamelan so that the intervals between scale steps are septimal whole tone, 8:7–subminor third, 7:6–major second, 9:8–8:7–7:6 (––––septimal major sixth, – = 42:48:56:63:72)

Use of pentatonic scales

Pentatonic scales occur in many musical traditions: * Indian classical music, both Hindustani and Carnatic traditions * Peruvian cumbia, Peruvian Chicha cumbia * Music of Assam, Indigenous ethnic folk music of Assam * Music of Sudan, Sudanese Arab Music * Celtic music, Celtic folk music * English folk music * German folk music * Nordic folk music * Hungarian folk music * Croatian folk music * Berber music * West African music * African-American spirituals * Gospel music * Bluegrass music * American folk music * Music of Ethiopia * Jazz * Blues * Rock music * Sami joik singing * Children's song * The music of ancient Greece ** Music of Greece, Greek traditional music and Polyphonic song of Epirus, polyphonic songs from Music of Epirus, Epirus in northwest Greece * music of Albania#Southern Albania, Music of southern Albania * Folk songs of peoples of the Volga region, Middle Volga region (such as the Mari people, Mari, the Chuvash people, Chuvash and Tatars#Volga Tatars, Tatars) * The tuning of the Ethiopian krar and the Indonesian gamelan * Philippine kulintang * Native American music, especially in highland South America (the Quechua and Aymara), as well as among the North American Indians of the Pacific Northwest * Most Turkic languages, Turkic, Mongolic languages, Mongolic and Tungusic languages, Tungusic music of Siberia and the Asiatic steppe is written in the pentatonic scaleVan Khe, Tran. “Is the Pentatonic Universal? A Few Reflections on Pentatonism.” The World of Music 19, no. 1/2 (1977): 76–84. http://www.jstor.org/stable/43560446. * Melodies of China, Korea, Lao Music, Laos, Music of Thailand, Thailand, Music of Cambodia, Cambodia, Malaysia, Japan, and Vietnam (including the folk music of these countries) ** gagaku, Traditional Japanese court music ** Shōmyō chanting * Andean music * Afro-Caribbean music * Polish highlanders from the Tatra Mountains * Western Impressionistic composers such as French composer Claude Debussy.

In classical music

Examples of its use include Frédéric Chopin, Chopin's Étude Op. 10, No. 5 (Chopin), Etude in G-flat major, op. 10, no. 5, the "Black Key" etude, in the major pentatonic. Giacomo Puccini used pentatonic scales in his operas ''Madama Butterfly'' and ''Turandot'' to imitate east Asian musical styles. Puccini also used Whole tone scale, whole-tone scales in the former to invoke similar ideas.

Indian ragas

Indian classical music has hundreds of ragas, of which many are pentatonic. Examples include Abhogi, Raag Abhogi Kanada (C, D, E-flat, F, A), Bhoopali, Raag Bhupali (C, D, E, G, A), Bairagi, Raag Bairagi (C, D-flat, F, G, B-flat), Chandrakauns, Raag Chandrakauns (C, E-flat, F, A-flat, B), Dhani (raga), Raag Dhani (C, E-flat, F, G, B-flat), Durga (raga), Raag Durga (C, D, F, G, A), Gunakri, Raag Gunakari (C, D-flat, F, G, A-flat), Hamsadhvani, Raag Hamsadhwani (C, D, E, G, B), Hindol, Raag Hindol (C, E, F#, A, B), Kalavati, Raag Kalavati (C, E, G, A, B-flat), Raag Katyayani (C, D, E-flat, G, A-flat), Raag Malkauns (C, E-flat, F, A-flat, B-flat), Raag Megh (C, D, F, G, B-flat), Shivaranjani, Raag Shivaranjani (C, D, E-flat, G, A), Sarang (family of ragas), Raag Shuddha Sarang (C, D, F#, G, B), Tilang, Raag Tilang (C, E, F, G, B), Bibhas, Raag Vibhas (C, D-flat, E, G, A-flat), Raag Vrindavani Sarang (C, D, F, G, B), and others. (For Tamil Music System, See here - Ancient Tamil music#Evolution of panns )

Further pentatonic musical traditions

The major pentatonic scale is the basic scale of the music of China and the music of Mongolia as well as many Southeast Asian musical traditions such as that of the Karen people as well as the indigenous Assamese ethnic groups. The pentatonic scale predominates most Eastern countries as opposed to Western countries where the heptatonic scale is more commonly used. The fundamental tones (without ''meri'' or ''kari'' techniques) rendered by the five holes of the Japanese shakuhachi flute play a minor pentatonic scale. The yo scale used in Japanese shomyo Buddhist chants and gagaku imperial court music is an anhemitonic pentatonic scale shown below, which is the fourth mode of the major pentatonic scale.

Javanese

In Javanese gamelan music, the slendro scale has five tones, of which four are emphasized in classical music. Another scale, pelog, has seven tones, and is generally played using one of three five-tone subsets known as pathet, in which certain notes are avoided while others are emphasized.

Somali

Somali music uses a distinct Musical mode, modal system that is pentatonic, with characteristically long intervals between some notes. As with many other aspects of Somali culture and tradition, tastes in music and lyrics are strongly linked with those in nearby Ethiopia, Eritrea, Djibouti and Sudan.

Scottish

In Scottish music, the pentatonic scale is very common. Seumas MacNeill suggests that the Great Highland bagpipe scale with its augmented fourth and diminished seventh is "a device to produce as many pentatonic scales as possible from its nine notes" (although these two features are not in the same scale). Roderick Cannon explains these pentatonic scales and their use in more detail, both in Piobaireachd and light music. It also features in Irish traditional music, either purely or almost so. The minor pentatonic is used in Appalachian folk music. Blackfoot music most often uses anhemitonic tetratonic or pentatonic scales.

Andean

In Andean music, the pentatonic scale is used substantially minor, sometimes major, and seldom ''in'' scale. In the most ancient genres of Andean music being performed without string instruments (only with Wind instrument, winds and percussion), pentatonic melody is often led with parallel Perfect fifth, fifths and Perfect fourth, fourths, so formally this music is hexatonic.

Jazz

Jazz music commonly uses both the major and the minor pentatonic scales. Pentatonic scales are useful for Musical improvisation, improvisers in modern jazz, pop, and rock contexts because they work well over several chords diatonic to the same key, often better than the parent scale. For example, the blues scale is predominantly derived from the minor pentatonic scale, a very popular scale for Musical improvisation, improvisation in the realms of blues and rock alike. For instance, over a C major triad (C, E, G) in the key of C major, the note F can be perceived as dissonant as it is a half step above the major third (E) of the chord. It is for this reason commonly avoided. Using the major pentatonic scale is an easy way out of this problem. The scale tones 1, 2, 3, 5, 6 (from the major pentatonic) are either major triad tones (1, 3, 5) or common consonant extensions (2, 6) of major triads. For the corresponding relative minor pentatonic, scale tones 1, 3, 4, 5, 7 work the same way, either as minor triad tones (1, 3, 5) or as common extensions (4, 7), as they all avoid being a half step from a chord tone.

Other

Military cadence, U.S. military cadences, or ''jodies'', which keep soldiers in step while marching or running, also typically use pentatonic scales. Hymns and other religious music sometimes use the pentatonic scale; for example, the melody of the hymn "Amazing Grace", one of the most famous pieces in religious music. The common pentatonic major and minor scales (C-D-E-G-A and C-E-F-G-B, respectively) are useful in modal composing, as both scales allow a melody to be modally ambiguous between their respective major (Ionian mode, Ionian, Lydian mode, Lydian, Mixolydian mode, Mixolydian) and minor (Aeolian mode, Aeolian, Phrygian mode, Phrygian, Dorian mode, Dorian) modes (Locrian mode, Locrian excluded). With either modal or non-modal writing, however, the ''harmonization'' of a pentatonic melody does not necessarily have to be derived from only the pentatonic pitches. Most Tuareg songs are pentatonic, as is most other music from the Sahel and Sudan regions.

Role in education

The pentatonic scale plays a significant role in music education, particularly in Orff Schulwerk, Orff-based, Kodály method, Kodály-based, and Waldorf education, Waldorf methodologies at the Primary education, primary or elementary level. The Orff system places a heavy emphasis on developing creativity through improvisation in children, largely through use of the pentatonic scale. Orff instruments, such as xylophones, bell (instrument), bells and other metallophones, use wooden bars, metal bars or bells, which can be removed by the teacher, leaving only those corresponding to the pentatonic scale, which Carl Orff himself believed to be children's native tonality. Children begin improvising using only these bars, and over time, more bars are added at the teacher's discretion until the complete diatonic scale is being used. Orff believed that the use of the pentatonic scale at such a young age was appropriate to the development of each child, since the nature of the scale meant that it was impossible for the child to make any real harmony, harmonic mistakes. In Waldorf education, pentatonic music is considered to be appropriate for young children due to its simplicity and unselfconscious openness of expression. Pentatonic music centered on intervals of the fifth is often sung and played in early childhood; progressively smaller intervals are emphasized within primarily pentatonic as children progress through the early school years. At around nine years of age the music begins to center on first folk music using a six-tone scale, and then the modern diatonic scales, with the goal of reflecting the children's developmental progress in their musical experience. Pentatonic instruments used include lyres, pentatonic flutes, and tone bars; special instruments have been designed and built for the Waldorf curriculum.Andrea Intveen
Musical Instruments in Anthroposophical Music Therapy with Reference to Rudolf Steiner’s Model of the Threefold Human Being

References

External links

* , Bobby McFerrin {{Authority control Pentatonic scales, 5 (number) Musical scales