Conversation so far:
How did Sandy Denny get started in Sandy Denny's career?
in September 1965, becoming involved with the folk club on campus.
What did she do in the club?
After her first public appearance at the Barge in Kingston upon Thames Denny started working the folk club circuit in the evenings.

Question: What did she do there?
Self-contained rewrite: What did Sandy Denny do in the folk club?