Conversation so far:
What are Rudolf Friml's greatest successes?
Rudolf Friml's best-known works are Rose-Marie and The Vagabond King.
Did Friml's works Rose-Marie and The Vagabond King do well for him?
Rose-Marie and The Vagabond King enjoyed success on Broadway and in London and were adapted for film.

Question: What was interesting about Rose Marie?
Self-contained rewrite: What was interesting about the operetta Rose Marie?