Green Day to perform at Dreamforce ’13 Standard That lovable Saasy posted on Twitter today that Green Day will be the band performing at Dreamforce ’13. It is official. @Benioff just shared on chatter! "Two words: Green Day." WHO ELSE IS PUMPED?! #dreamforce #df13 #salesforce — Salesforce SaaSy (@TooSaaSy) August 26, 2013 Going to be awesome!