Gallery of photos from the KROQ Almost Acoustic Christmas concerts held December 12 and 13, 2015. Musicians performing at the 26th annual event included Twenty One Pilots, X Ambassadors, AWOLNATION (joined by Duff McKagan), Silversun Pickups, Bastille, Weezer, Andrew McMahon in the Wilderness, James Bay, Elle King, The Neighbourhood, Cold War Kids, Panic! At The Disco, Chris Cornell, Of Monsters and Men, and Fall Out Boy. (Photos by Christina Radish Photography / www.christinaradish.com)