Tritonic scale
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For scales containing tritones, see Anhemitonic scale.
A tritonic scale is a musical scale or mode with three notes per octave. This is in contrast to a heptatonic (seven-note) scale such as the major scale and minor scale, or a dodecatonic (chromatic 12-note) scale, both common in modern Western music. Tritonic scales are not common in modern art music[citation needed], and are generally associated with indigenous and prehistoric music.[2]