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.
what year did Lyttelton's jazz love begin
1936

Question: what was one of his big jazz accomplishments
Self-contained rewrite: what was one of Humphrey Lyttelton's big jazz accomplishments