Conversation so far:
What was the Mercury Theatre on the Air?
After the theatrical successes of the Mercury Theatre, CBS Radio invited Orson Welles to create a summer show. the show was called The Mercury Theatre on the Air
What did Mercury Theatre on the Air do?
The weekly hour-long show presented radio plays based on classic literary works, with original music composed and conducted by Bernard Herrmann.
How did The Mercury Theatre on the Air do?
The Mercury Theatre's radio adaptation of The War of the Worlds by H. G. Wells October 30, 1938, brought Welles instant fame

Question: What happened next in their business?
Self-contained rewrite: What happened next in Mercury Theatre on the Air?