Black Sabbath, 8:05 p.m. Fri. at Bud Light stage

Brian MooreMetallica (music group)Guns N' Roses (music group)Ozzy Osbourne
This is one of those bands you just have to see before they are gone for good. The grandfathers of heavy metal, reunited - mostly. Without them there'd be no Metallica, Faith No More, Guns N' Roses ... the list goes on. Besides, who knows how much longer Ozzy Osbourne will be coherent enough to...