Billy Corgan blacks out on stage during Smashing Pumpkins concert (Video)
"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," Corgan, 43, wrote on his Twitter page. "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 rock band is currently touring the United States until the end of July, after which the group will head to Singapore, Japan and South Korea and later return to perform at the Sunset Strip Music Festival in Los Angeles on August 28.
The group was most famous in the 1990s, with songs such as "Bullet with Butterfly Wings" and "1979".
Footage said to be from the concert in question was later uploaded to YouTube. Check out the video: