So this is a cool little clip. Some of my friends managed to get Green Day to play at my graduation party in 1991. Unfortunately one of the opening bands broke the P.A. so we had to try to find a replacement quickly. While we were waiting for the new P.A., Green Day performed this stripped down version of Knowledge to pass the time. By the time the new P.A. showed up it was dark and late and the cops shut it down after only a couple songs. Still an awesome, unforgettable night. Enjoy.