Conversation so far:
Who were someof the cast members?
singer Patti Page recorded the title song from the show for Mercury Records on the day that the musical opened on Broadway.
what song did Patti sing?
She featured the song on her TV show, The Patti Page Olds Show, helping to popularize the musical.

Question: Who was the leading cast member?
Self-contained rewrite: Who was the leading cast member of the sound of music