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.
where did Humphrey Lyttelton go to school at
Sunningdale Preparatory School
what country/state was the Sunningdale Preparatory School in
Sunningdale in Berkshire, close to London, England
is there something big that changed Humphrey Lyttelton's life
At Eton, Lyttelton fagged for Lord Carrington and formed his love of jazz.

Question: what year did the jazz love begin
Self-contained rewrite: what year did Lyttelton's jazz love begin