The last time I put out a tip jar, a gagdy put a note in it which read. Tip: don't play tune xx again it was crap.


Seriously. It is not usual to do this as gnomad suggest. People listening to a group of session musicians might but them a drink but that would be it. There would not be an expectation on behalf of the musicians.

Wow....what a grasping lot in the US...:-)