Yuko's played bass, Rena's played trumpet, and Sasshi's played trombone.
Yukirin plays trombone, Mayu plays euphonium, Yui plays drums, and Sayanee was lead guitarist in this kick-ass band Mad Catz, so I'm a little disappointed that we missed out on some really crazy stuff, even if I wouldn't trade guitarist!Takamina for the world. (Although lol, the guitars were pretty horrible. The sound guy was doing his best to mute them.)