Show Description Zac Brown Band's 'Great American Road Trip' kicked off in May 2014 with the introduction of ZBB's new, eighth member, Matt Mangano, on bass. The tour announcement came on the heels of ZBB selling out a two-night stand at Fenway Park without any support acts -- a feat only accomplished by four other bands (Bruce Springsteen and the E Street Band, Jimmy Buffett & The Coral Reefer Band, The Police and The Rolling Stones).