Conversation so far:
Did Duff McKagan play for Guns N' Roses?
In March 1985, Duff McKagan replaced bassist Ole Beich in Guns N' Roses.
What year did Duff McKagan start with Guns N' Roses?
In March 1985, Duff McKagan replaced bassist Ole Beich in Guns N' Roses.

Question: Did he have to tryout?
Self-contained rewrite: Did Duff McKagan have to tryout for Guns N' Roses?