I'm trying to figure that out. Feels like is should have been late 90s when I was in highschool, but it looks like the documented shows were in 2001 or 2004 (which is definitely too late). If it was the 2001 show I'm misremembering and I'd been to lots of shows by then. It's also possible maybe I'm mixing up Pepsi Center or McNichols with Coors?