On YouTube is a K.V. Narayanaswamy (KVN) concert, listing co-artistes M. Chandrasekaran, Umayalpuram Sivaraman and G. Harishankar. Presenting ‘vAtApi gaNapatim’ after a shloka, KVN sings a classic sangati at the 2 minute 52 second mark when, suddenly, mid-line, the kanjira comes in – for all of 9-10 aksharam-s – clear,…