Conversation so far:
What happened in 1920 to Kurt Weill
Kurt Weill had Success in the 1920s and early 1930s
How was Kurt Weill successful?
In 1922 Kurt Weill joined the Novembergruppe, a group of leftist Berlin artists that included Hanns Eisler and Stefan Wolpe.

Question: What did he achieve in the 1930s
Self-contained rewrite: What did Kurt Weill achieve in the 1930s