Conversation so far:
What is Tin Pan Alley?
His employer was Jerome H.
Remick and Company, a Detroit-based publishing firm with a branch office on New York City's Tin Pan Alley, and he earned $15 a week.
What did he do in that company?
"song plugger.
what is plugger?
His first published song was "When You Want 'Em, You Can't Get 'Em, When You've Got 'Em, You Don't Want 'Em" in 1916 when Gershwin was only 17 years old.

Question: Did he do broadway shows?
Self-contained rewrite: Did George Gershwin do broadway shows