How taal is kept
The two living gestures — clap and silent wave — and what the hand does not do.
The two living gestures
The living North Indian hand vocabulary is principally binary: an audible clap marks the opening of a tali-bearing vibhag, a silent wave marks the opening of a khali-bearing one. The gestures mark structural boundaries, not every matra — no reliable source prescribes a separate named gesture for each beat.
A1, 2
Sam is a location, not a gesture. It is the first matra of the avartan and the main point of convergence. In most taals it coincides with a clap, but Rupak proves that sam and tali are not identical: its sam is normally shown with a wave.
A1
Formal versus habitual
Examination padhant expects explicit tali–khali on the hand. In concert a musician may instead slap the thigh, count on the fingers, nod, prepare visibly for sam, or show no movement at all through a rapid passage. These are communicative and attentional behaviours, not a second codified sign language.
A2, 3
The hand does not follow the bols
During dugun, tigun and chaugun the density of recitation changes; the positions of sam, tali and khali do not. The hand shows the architecture; the voice supplies the content. Current North Indian percussion curricula assess exactly this.