Conversation so far:
when did Joe Satriani start his music career?
Satriani started playing in a San Francisco-based band called the Squares
what instrument does Joe Satriani play?
He was inspired to play guitar at age 14, after hearing of the death of Jimi Hendrix.

Question: what year did he start his music career?
Self-contained rewrite: what year did Joe Satriani start his music career?