R.E.M. fans were in for a surprise as singer Michael Stipe, bassist Mike Mills, guitarist Peter Buck and drummer Bill Berry all appeared onstage together Thursday night (Feb. 8) for the first time since their Rock and Roll Hall of Fame induction in 2007, though they did not perform. What brought them all together? The band members were attending a concert featuring actor Michael Shannon and musician Jason Narducy, who have been touring while playing R.E.M.’s Murmur album on a nightly basis. While the full four R.E.M. members chose not to play together, their presence onstage at the end of the …