Conversation so far:
was van morrison Van Morrison's real name?
CANNOTANSWER.
who was one of the 1st people he looked up to?
CANNOTANSWER.
did he work with anyone?
Morrison has typically been supportive of other artists, often willingly sharing the stage with them during his concerts.

Question: who did he perform with?
Self-contained rewrite: Who did Van Morrison perform with?