Thanks to all for organising the singaround. I chickened out after the first song of the second time around, because I've been trying to bring my waking/sleeping cycle a bit closer to the hours of daylight, though with limited success.

Whichever day of the week we choose is bound to be wrong for someone. I forget how many of us were there last night, but it was enough for once round to last the best part of three hours. So Joe's idea of Mondays and Thursdays should work, with more than enough singers/musicians each time, even if a lot of us don't join in every time.