Before Weezer, Welsh played in multiple different bands like Slower, Chevy Heston, Jocobono, Left Nut, Heretix, and playing with Juliana Hatfield live.
Played in the band Weezer and his only appearance with the band was
their third album, "The Green Album" (2001), which is actually
self-titled.
Welsh actually predicted his own death on Twitter a week before he actually passed away, saying that he would pass away from a heart attack in his Chicago hotel room in the following week.