Somewhere in this picture is a Julie and a Knitatpug - they are singing Handel's marvelous Choral piece "'The Messiah".
(hint: in the right of the box just above the double bass)
I'm afraid the only role I had in the performance of this masterpiece was to focus a light on the soloists downstage and then stand by (knitting) in case I was required there or for any of the other 4 theatres that were operating at the same time.
Softly humming "We like Sheep......"
The joy of Duty Shifts.