Conversation so far:
Did James Whale work in theatre?
Under the tutelage of actor-manager Nigel Playfair, James Whale worked as an actor, set designer and builder, stage director and director.
What was one of James Whale's first plays?
In 1928 James Whale was offered the opportunity to direct R. C. Sherriff's then-unknown play Journey's End for the Incorporated Stage Society.
What was one of the plays James Whale worked on that was a huge hit?
Journey's End with James Whale was a tremendous success, with critics uniform and effusive in their praise.
What year was the play Journey's End a success?
Journey's End was well received and transferred to the Savoy Theatre in London's West End, opening on 21 January 1929.
Did James Whale have any other plays that were worth naming besides Journey's End?
No other plays James Whales did was at noteworthy as Journey's End.

Question: When did he start doing music?
Self-contained rewrite: When did James Whale start doing music?