Conversation so far:
When was Billy Taylor born?
Billy Taylor was born in Greenville, North Carolina on July 24, 1921.
Are there any other interesting aspects about Billy Taylor's early life?
Billy Taylor grew up in a musical family and learned to play different instruments as a child.
Who played music in Billy Taylor's family?

Question: What made his career a career?
Self-contained rewrite: What made Billy Taylor's career a career?