Re: Tactful corrections of band members
My first guess is that this is a guitarist.
Pocket got to the good advice first. However, It seems like what was causing this over-playing is unclear. Maybe he doesn't understand the principle of groove? Maybe his ego is kind of big. Whatever it is, it really needs to be fixed if he's ruining the tightosity of the band.
Be blunt, don't be mean, be completely honest. If he can't take it, then that's one of his faults.
-Insert witty comment here-