I played for a graduation last night with a brass quintet. At the last minute we decided to play trumpet voluntary for the procession. The format was AA-BB-CC-AA we agreed that if we needed more music we would go back to the top after the C section. We thought 2 times should be plenty. After the third time threw, the guy playing second realized that I was in trouble so he played my part. After he came in we started trading off. We must have played the thing 25 times.