Simple answer: I don't know. I was developing a backing track for Jobim's "If you never come to me" and the chart I was given had "C#maj7 (add 13)" at bar 2. For the back track I suppose it really doesn't matter, but for my solos over that chord it could, if "add 13" means not using the 9 and 11th of C#maj. Your thoughts?

Bob aka jazzwombat