Conversation so far:
How did Eddie Rabitt get started?
He won a talent contest.
Where was this talent contest won by Eddie Rabitt held?
What did the talent contest won by Eddie Rabitt lead to?
He was given an hour of Saturday night radio show time to broadcast a live performance from a bar.
What was the Saturday night radio show where Eddie Rabbitt Broadcast a live performance from a bar called?

Question: How long did it last?
Self-contained rewrite: How long did Eddie Rabitt's Saturday night radio show live performance from a bar last?