It has been a rough week for singers. Earlier in the week Pink took a header in Germany and had to go to the hospital. Last night, Billy Corgan collapsed and fainted and was briefly unconscious. Despite this, and feeling like a rat in a cage, he was revived and then finished the show.
It happens about 20 seconds in. In case you can't watch the video, let me describe it for you.
People singing along to Bullet With Butterfly Wings. Then the music kicks in, the lights go crazy, your eyes feel like they are on overload and you begin to shake uncontrollably. Just when you say to yourself that Billy better get to the collapsing soon, you see him playing his guitar, take a step back, and then go boom.