I don't think his soul will rest --- I think it will soar, in the heavens, forever.
A very sad loss, although 86 is a good age. No age is good enough for the rest of us though.
And I'm caused to reflect that, yes, as I age, the fact of my mortality becomes harder to escape, but I can live with my mortality more easily that that of those I value so much, several of whom are eighty-years plus.
Balamuralikrishna made everything he touched sound beautiful. Even if he was teasing some complex laya calculation, his singing was wonderful for all of us.
A great loss.