Bruce? Ringo? Dylan? 6 Potential Guests At Tonight's Love For Levon Helm ConcertTonight, an all-star lineup of music legends will take the stage at New Jersey's Izod Center for the "Love For Levon" concert. The concert, paying tribute to the late drummer/singer Levon Helm from The Band will feature Roger Waters, Joe Walsh and Gregg Allman, among others. The event website also mentions that other "legendary surprise guests" will perform. But who might those guests be?