(MANCHESTER, Tenn.) – Radiohead, the Red Hot Chili Peppers, Phish, Bon Iver, the Beach Boys 50th Anniversary Reunion Tour, Steven Bernstein’s MTO Allstars Plays Sly and Skrillex are among the initial lineup of artists slated to perform at the 2012 Bonnaroo Music and Arts Festival, the four-day camping and music festival that will be held…