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 Harris. Ben-Hur further elaborates on the concept of placing additional chromatic passing tones between other notes in the scales. The bebop harmonic minor scale (or bebop natural minor scale, as listed in Mark Levine's "The Drop 2 Book") is derived from the harmonic minor scale and has a chromatic passing tone (an additional 7) between the 6th and the 7th notes. \override Score.TimeSignature #'stencil = ##f \relative c' { </score> It contains all of the notes of both the harmonic minor scale and the natural minor scale (Aeolian mode) of the same root. It can be used on all three