Counting a tala and finding sam
A tala is a repeating organisation of time, not just a number of beats.
Cycle, division and beat
An avartan is one complete cycle. Its matras are grouped into vibhags. Counting the total is a beginning; knowing the divisions, hand gestures and recurring drum pattern helps you keep your place within it.
In Teental, sixteen beats are grouped 4 + 4 + 4 + 4. The conventional claps fall on 1, 5 and 13, with a wave on 9. Say the numbers while keeping the divisions visible. A wave changes the gesture, not the flow of time.
Sam and the sung entrance
Sam is the first beat of the cycle. A bandish need not start there. A phrase may begin before sam and resolve onto it; where it starts and which syllable reaches sam must come from the composition’s notation or rendition.
Do not move the cycle’s beginning to fit the first word you hear. Equally, do not assume that every line finishes on sam simply because that creates an attractive diagram.
Same count, different tala
Ektal and Chautal both have twelve beats. Their identity cannot be settled by counting twelve alone. Check the named tradition and theka. Ada Chautal is another name again and is not a synonym for twelve-beat Chautal.
A practical check
Count two cycles silently while listening, then mark the next sam without resetting at the singer’s next phrase. If the alignment fails, slow down the analysis and locate a reliable refrain return.