Conversation so far:
when did Humphrey Lyttelton's career first start to take off
On VE Day, 8 May 1945, Lyttelton joined in the celebrations by playing his trumpet from a wheelbarrow, inadvertently giving his first broadcast performance; the BBC recording still survives.

Question: where did he go to school at
Self-contained rewrite: where did Humphrey Lyttelton go to school at