Conversation so far:
Did Ozzie Nelson get an education in Music?
Ozzie Nelson did not get an education in music but during the Depression, he turned to music as a full-time career.
Did Ozzie Nelson have a band or was he always a leader?
Ozzie Nelson started his entertainment career as a band leader. He formed and led The Ozzie Nelson Band, and had some initial limited success.

Question: What kind of music did he play in his band?
Self-contained rewrite: What kind of music did Ozzie Nelson play in his band?