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.

Question: what is plugger?
Self-contained rewrite: what is a plugger in a publishing firm