Heptatonic scale are considered subsets of a twelve-pitch scale roughly analogous to the Western chromatic scale. The first and fifth melakarta tones, corresponding to the first and eighth chromatic tones, are invariable in inflection, and the fourth melakarta tone, corresponding to the sixth or seventh chromatic tone, is allowed one of two inflections only, a natural ("shuddah") position and a raised ("tivra") position. The second and third melakarta tones can be picked from the 4 chromatic tones (second through fifth), and similarly for the sixth and seventh. Thus the number of possible forms is equal to twice the square of the number
Jazz scale For a C7 chord, the C melodic minor scale starting from B (C enharmonically) produces the C altered dominant scale enharmonically. This scale is also called the superlocrian scale, as it is indeed reminiscent of a locrian scale with a flattened 4th, but it is usually regarded as that of major quality. Another name for this scale is the diminished-wholetone scale because the first tetrachord is that of a (half, whole) diminished scale and the second tetrachord is whole-tone. The bebop scale is used most often. Jazz scale A jazz scale is any musical scale used in jazz. Many "jazz