Vedder, the frontman of Pearl Jam, was joined by a group of middle school students with Chicago-based nonprofit Guitars Over Guns, an organization that provides free after-school music education. "We partner up with individual schools all throughout the city. We train professional musicians to be mentors in those schools," said programs manager and former mentor Mark Anderson. The budding musicians said the group offers more than a place to play and learn from industry experts. #chicago #obama #pearljam