Conversation so far:
When did Louis Armstrong move to Chicago?
In 1922, he moved to Chicago at the invitation of King Oliver.
What was Louis Armstrong's first gig in Chicago?
His first musical performance may have been at the side of the Karnoffsky's junk wagon.
What did the critics say of Louis Armstrong's playing?
In 1922, he moved to Chicago at the invitation of King Oliver. With Oliver's Creole Jazz Band he could make enough money to quit his day jobs.

Question: What songs was he famous for?
Self-contained rewrite: What songs was Louis Armstrong famous for?