Harp, choir and 'celli suggest that this might be the Long Goodbye in progress?
It looks as though nobody's playing here: maybe Geoff is adjusting his pedals
A good view of the band (except Gary): Matthew playing one-handed, and trumpets blazing
Dancer / choreography Andrea Buckley interprets Simple Sister in an unbelievably restricted space!
This looks very like the beginning of the violin solo in the middle of Grand Hotel, when maestro Brooker unexpectedly turned and said 'Hello' to a couple of fans from Bristol in seats F39 and F40!