I agree with Felipa about the variable quality/expertise/whatever you prefer to call it, but the same probably applies to most online singarounds, as indeed it does to in-person sessions when those are possible. If a session is to be recorded, anyone who wishes should be able to have the recording paused, whether because they feel that they're not very good or for any other reason (or no reason at all). That is how it works for Sharp's singarounds; but in practice I think few if any do request a pause.

But anyway Joe has sounded out participants for the Mudcat one so I won't pursue it beyond this post.