If someone and I make plans together, I consider that a commitment. In this case, it could be possible for him to keep his commitment about playing guitar with you and also playing with friends. A both scenario rather than either/or.
However if someone breaks a commitment to me, I have the right to discuss that with them. Maybe it is a misunderstanding? Maybe it needs to be re-negotiated due to changing circumstances or needs? Those are respectul, mutual ways to address differences.
I was often the victim of being even more abusively verbally attacked for daring to bring up a current or prior wrongdoing that effected me.
It is intimidation. It is abuse.
I learned the hard way that I simply cannot be in any kind of relationship that employs those dynamics.