I have heard, that the strings on a sarod a stopped with the fingernails rather than the tip of the fingers. I understand, that this is essential to produce a sustained sound on a fretless fingerboard. However, I don't understand how this is exactly done:
Do sarod players necessarily have longer fingernails on their left hand? This would make sarod playing incompatible with playing western plucked instruments like the guitar or lute, in my opinion. However I have heard of the sarod player Ken Zuckerman, who is also a teacher of lute at the schola cantorum basiliensis in Basel/switzerland.