People reports today that Smashing Pumpkins leader Billy Corgan collapsed on stage last night during a show in Tampa, Fla.

Corgan, 43, later explained via Twitter: "And for those that saw me fall last night during Bullet, that wasn't a stage move or clumsiness. That was me blacking out and wiping out. ... I have no memory of falling against the drum riser and my guitar cabinet, but I can tell you I've got quite a good bruise + am moving slow."

The Pumpkins are scheduled in Knoxville, Tenn., tonight -- and then at a hometown benefit concert Tuesday at Chicago's Metro.