Harmonic scale It was invented by Wendy Carlos and used on three pieces on her album "Beauty in the Beast" (1986): "Just Imaginings", "That's Just It", and "Yusae-Aisae". Versions of the scale have also been used by Ezra Sims and Frans Richter Herf. Though described by Carlos as containing "144 [= 12] distinct pitches to the octave", the twelve scales include 78 (= ) notes per octave. Technically there should then be duplicates and thus 57 (= 78 − 21) pitches (21 = ). For example, a perfect fifth above G (D) is the major tone above C. Harmonic scale The Harmonic
Bebop scale generally used by guitar players for its accessibility when applied to traditional minor scale shapes (that is, it is simply easier for guitarists to play). However, many players and resources adhere to the traditional spelling of the scale. The bebop major scale is derived from the Ionian mode (major scale) and has a chromatic passing tone between the 5th and 6th notes. \override Score.TimeSignature #'stencil = ##f \relative c' { </score> This scale is often used over major sixth chords and major seventh chords. The bebop melodic minor scale is derived from the ascending form of the melodic minor scale