Tala, Laya and Rhythmic Accompaniment
Domain 4 tests the arithmetic and vocabulary of rhythm: matra, vibhag, tali, khali, sam and avartan, the laya and kala system, the standard talas, and the percussion that carries each style.
Core rules
- Matra = one beat. Vibhag = a group of matras (a bar). Tali = a clap marking a vibhag. Khali = an 'empty' section marked by a wave instead of a clap. Sam = matra 1, the resolution point where the cycle restarts. Avartan = one complete cycle.
- Laya = tempo: vilambit (slow), madhya (medium), drut (fast). Kala = how many beats fill one matra: barabar (1x), dugun (2x), tigun (3x), chaugun (4x).
- Jati = internal grouping: tisra (3), chatusra (4), khanda (5), mishra (7), sankirna (9).
- Standard talas: teental 16 (4+4+4+4), dadra 6 (3+3), keharwa 8 (4+4), jhaptal 10 (2+3+2+3), rupak 7 (3+2+2, with khali on sam), ektal 12, chautal 12 (pakhawaj), dhamar 14.
- Accompaniment: tabla and pakhawaj in Kathak; mridangam with nattuvangam cymbals in Bharatanatyam; mardala in Odissi; chenda in Kathakali. Kathak dancers recite padhant bols themselves.
Worked example
In teental, where does khali fall, and how many beats does one avartan take in dugun? Reasoning: teental is 4+4+4+4, so vibhags begin at matras 1, 5, 9 and 13. The third vibhag - matra 9 - is khali. In dugun each matra holds two beats, so 16 × 2 = 32 beats per avartan; sam still falls on matra 1.
Traps
Placing khali on sam in every tala - rupak is the standard exception. Confusing vibhag with matra when counting. Treating laya and tala as synonyms (tempo versus cycle). Forgetting tigun and chaugun when a question says 'three times' or 'four times'.