Thanks for this info. Penny Hop does ring a bell, so that may well be them.
I have mp3'ed the tape, but as it's around 50Mbit, it's not easy to pass around. I'm fairly new to forums - what's the simple way of sharing this file?
By the way, there are just 3 or 4 dances plus the floor spot and the quality is not great, but when they get into full swing on 'Banish Misfortune', it's still a treat to hear. There is a certainly a recorder player, plus Piers(?) on drums, an electric bass plus sax and possible slide trombone.