Had to replace a very good friend this week as lead singer/rhythm guitarist of our band. It sucked, but it was beyond obvious that it had to be done. The really bad thing is that we are in the middle of a month long committment and I know he was enjoying it and looking forward to more shows, but the move had to be made for the best sound/performance/chemistry etc. sooner than later. The moral of the story is be careful about having friends in your band because as your band matures and expectations and performance standards grow, sometimes they don't always have the same level of committment, time or talent to match what you want to do and then it's very hard to replace them if you have to.