I am in a 'band' with a good friend on guitar, me on bass and my twin brother on drums. IMO I think he can keep rhythm tighter than anything and is going fine. However, my guitarist/friend is convinced he should play as fast as the drummer from Dragonforce. He also thinks that every solo should be played as fast as he possibly can, which really annoys me, as it usually results in him going horribly off time. He also does that by switching riffs without warning in the middle of songs, leaving the drummer and I fumbling around looking for the beat and when to join in. Have you got any ideas on how to help?