Oh yes...The Panozzo brothers I saw STYX IN '79 FOR THE Pieces of Eight Tour and it was a great show and with Chuck Panozzo on bass and John Panozzo on Drums they were a good brother team.
My favorite Musical Brothers would have to be Greg and Duane Allman, I'm a big Allman Brothers fan.
Eddie and Alex Van Halen. I will also state my worst. The kink brothers. They keep kicking the shit out of one another.
Johnny and Edgar Winter