Octatonic scale scale" . The twelve tones of the chromatic scale are covered by three disjoint diminished seventh chords. The notes from two such seventh-chords combination form an octatonic collection. Because there are three ways to select two from three, there are three octatonic scales in the twelve-tone system. Each octatonic scale has exactly two modes: the first begins its ascent with a whole step, while the second begins its ascent with a half step (semitone). These modes are sometimes referred to as the "whole step/half-step diminished scale" and the "half-step/whole step diminished scale", respectively. Each of the three distinct scales can
In scale and containing notes between them, as in the "miyako-bushi" scale used in "koto" and "shamisen" music and whose pitches are equivalent to the "in" scale: In Indian classical music, Gunkali (Hindustani) and Karnataka Shuddha Saveri (Carnatic) are nearly identical to the pentatonic "in" scale, highlighting the shared past of their origins. Some rare examples of ancient genres of Andean music (e.g. k'antu) use a scale similar to the "in" scale combined with melody leading with a parallel fifths and fourths. For example listen to "Machulas Kantu" by Bolivia Manta folk group ("Wiñayataqui", 1981). In scale The in" scale (also known