Jhaptal Layakari Plan for a School Ensemble
The school ensemble is accompanying a sarod gat in Jhaptal at a comfortable barabar laya of 50 matras per minute. The gat's mukhra lands on sam, the khali vibhag is on matra 6, and the piece lasts six avartans. After two avartans the sitar player doubles the speed without warning; the tabla player follows, but the conductor loses the sam and the sarod player's mukhra arrives half a matra early. The group then tries aad laya, but the tabla player's theka becomes unclear and the sarod player asks for chaugun to end the piece with a flourish. The teacher stops the rehearsal and asks for a written plan showing avartan durations, the tali/khali map, and a rule for when to use which layakari. The students have one rehearsal left before the function.
1. Calculate the duration of one Jhaptal avartan at barabar, dugun and aad at 50 matras per minute. Show the arithmetic.
Read the worked answer
At 50 matras/min, one matra lasts 60/50 = 1.2 s. Barabar: 10 matras × 1.2 s = 12 s per avartan. Dugun: 100 matras/min, so 10/100 min = 0.1 min = 6 s. Aad is 3/2 laya: 50 × 1.5 = 75 matras/min, so 10/75 min = 0.1333 min = 8 s. Check: aad lies between barabar and dugun, as it should. The arithmetic also shows why a sudden dugun feels twice as fast: the avartan halves from 12 s to 6 s, not merely the bol spacing.
2. Map Jhaptal's vibhag, tali and khali, and explain how the tabla player should cue sam when moving from barabar to dugun.
Read the worked answer
Jhaptal has 10 matras in vibhags 2+3+2+3. Tali: sam at 1 (×), tali 2 at 3, khali at 6 (0), tali 3 at 8. The khali vibhag is the third vibhag (matras 6-7), so the student must not treat matra 6 as the start of the cycle. To cue sam when moving to dugun: keep the cycle length as ten main matras but subdivide each matra into two; the tabla player doubles the bols and keeps the khali lighter at matra 6. The conductor should count '1-e-2-e...' and give the cue at the start of the new avartan, not at the half-matra where the sarod's mukhra currently lands.
3. Was chaugun a good choice for the ending? Decide and justify using laya, clarity and the gat's mukhra.
Read the worked answer
Chaugun at 50 matras/min would be 200 matras/min, an avartan of 3 s. That is possible for a short tihai but risky for a six-avartan piece with a mukhra on sam: the sarod's phrasing and the tabla's khali will blur, and the conductor has already shown that the sam cue is unstable. A better plan is to end with one avartan of dugun, or a small tihai that lands on sam, and reserve chaugun for an isolated display passage. Layakari should clarify the gat, not outrun the ensemble.