My boyfriend wants me to lose my guy friends?

I see you really need some advice, and people haven't really given you. Your boyfriend is overreacting, specially when i know the truth, tell him you've been wrong lying to him and try to explain once again briefly what it's all about. If he still disapproves tell him he can tag along, and invite him to one of you music recording thing with the guys, so he sees for himself what's the deal. If he's still against that, maybe you should consider breaking up with a guy who won't let you live and do what you like, it starts with that and it will spread on every aspect of you life. He'll have control of everything. Doesn't seem healthy to me. Make your move.