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.
What songs was Louis Armstrong famous for?
Louis Armstrong was a jazz trumpeter, bandleader and singer known for songs like What a Wonderful World,” “Hello, Dolly,” ”Star Dust” and La Vie En Rose.”
Are there any other interesting aspects about Louis Armstrong's time in Chicago besides when he moved to Chicago, his first gig, making enough money to quit his day job, and the songs he is famous for?
Armstrong could blow two hundred high Cs in a row. As his reputation grew, he was challenged to cutting contests by other musicians.
When did Louis Armstrong start his own band?
From 1925 to 1928, Armstrong made more than 60 records with the Hot Five and, later, the Hot Seven.

Question: What was Armstrong's style?
Self-contained rewrite: What was Louis Armstrong's style?