In music, a synthetic scale is a scale which has been derived from a traditional diatonic major scale through the alteration of one degree by a semitone in either direction^[1]. Composer Ferruccio Busoni originally explored these scales in his A New Esthetic of Music^[2] and their number and variety were later clarified by J. Murray Barbour who also proposed the application of the procedure to scales of more or less than seven degrees, including pentatonic scales^[1].

These synthetic pitch collections may serve as the basic melodic and/or harmonic material for a passage of music. However, the thousands of available scales cause Murray Barbour to propose that, "the whole problem is of greater theoretical interest than of practical worth."^[1]

Scriabin's Mystic chord, when considered as the "Prometheus scale", is an example of a synthetic chord in that it is whole tone scale with one degree altered. However, it was not the generating element to Scriabin's music nor does his derivation of it from the whole tone scale necessarily indicate knowledge of Busoni's theories.

The pitches of synthetic scales may duplicate pre-existing scales though their derivation is different and their use is often quite different.

[edit] See also

• Harmonic major scale

[edit] Sources