I recall going to the open mic at a local folk club prepared to share a song that I was excited about. One of the other performers asked me if I'd play the banjo to back her up. When it came time for me to do my song, I was told that I had already had my performance slot. I was a bit pissed off, but understood that they had limited time on the open stage. I was a bit surprised when the host told me that if I had done my song first, then I would have been allowed to accompany the other singer. I couldn't see the logic.