Conversation so far:
How did Dion DiMucci end up in the Belmonts?
Bob and Gene Schwartz also signed Dion's friends, the Belmonts, (Carlo Mastrangelo, Fred Milano, and Angelo D'Aleo), a vocal group named for nearby Belmont Avenue.
Who else was signed?
teamed them, with Dion singing lead.
Did they release an album?
Their initial hit was followed by "No One Knows" and "Don't Pity Me," which also charted the Billboard Top 100.
What was their initial hit?
No One Knows.
How did no one knows do on the charts?
charted the Billboard Top 100.
Did he break with the Belmonts in 1960?
in early 1960, Dion checked into hospital for heroin addiction, a problem he had had since his mid-teens.

Question: What did he do after the hospital?
Self-contained rewrite: What did Dion DiMucci do after the hospital?