tetrachord |
چوتارا ۔ آٹھ سُرے سرگم میں سے چار سُر کا سرگم ۔ دانگ ۔ |
(1) - Tetrachord (n.) A scale series of four sounds, of which the extremes, or first and last, constituted a fourth. These extremes were immutable; the two middle sounds were changeable. |