Alap
nonpulsatile introduction to songs
Sruti
microtones that create scales
Svara
pitches of a raga, usually seven
Melakarta
scales that consist of seven notes
Komal
a flat tone
Tivra
a sharp tone
Shuddh
a natural tone
That
seven note scales, 32 of them
Arohana
The ascending structure of scales
Avarohana
The descending structure of scales