Conversation so far:
when did Humphrey Lyttelton's career first start to take off?
and formed a quartet at the school in 1936.
where did he go to school at?
From Sunningdale Preparatory School, Lyttelton duly progressed to Eton College.
what country/state was this in?
in Buckinghamshire).
is there something big that changed his life?
At Eton, Lyttelton fagged for Lord Carrington and formed his love of jazz.
what year did the jazz love  begin?
1936.
what was one of his big jazz accomplishments?
On VE Day, 8 May 1945, Lyttelton joined in the celebrations by playing his trumpet from a wheelbarrow, inadvertently giving his first broadcast performance.
did he play any other insturments?
CANNOTANSWER.
did he do anything else that is worth talking about in his career?
In 1949, he joined the Daily Mail as a cartoonist.

Question: what else did he do before he died?
Self-contained rewrite: Other than playing the trumpet and working as a cartoonist, what else did Humphrey Lyttelton do before he died?