I play in a corporate band which seems like a nice break from work 1 day a week, but wondering how one best handles some of the following situations without coming off as being an A-hole. e.g. person shows up late for practice and then instead of bringing their own music, they share off yours and move your stand right in the middle of practicing and constantly move the music over to their side, they have a habit of coming in late (on the music) or just not having a good sound (sounds like a spitting sound so they have a crappy embouchure, and half the time in between stops in the song or in the middle of the song he is screwing around with his cell phone. Granted a few chairs from me in the other direction I have a semi-professional playing, but this guy has a tendency to bring me down. e.g. its like when I go golfing and I have a tendency to play up or down to my competition. And I feel like this guy is causing me to be off my game.