I just thought if we would get instrument typically associated with soldiers/wars/millitary stuff,like war drums,we could play certain melody (using the current music interface,no easymode) on it to get a buff for our party.There would be several avaible buffs and we could switch the melody to switch them,and things would scale with charisma (finally) and psyche.
Just because seeing a bunch of armed dudes with a dude playing badass dum dum dum dum dum is a lot cooler than some mvmnt cambert or whatever those virgins come up with