British Music Hall - C/D, S &D?

Strongly recommend Leslie Sarony's Ain't It Grand To Be Bloomin' Well Dead (Parts I and II).

xp it would have been a variety show, so the big act could be a singer (more likely an all-round entertainer), but equally a magician or who/whatever else was popular.

Of course it would, it's obvious now you say it - hence the Royal Variety Show, and the Beatles being booked with conjurers and performing dogs when they first got big.