Travis Barker collaborated with the alternative rock band +44 to make an album.
+44 ( read as Plus Forty-four ) was an American rock supergroup formed in Los Angeles , California in 2005 . Travis Barker . Barker has also performed as a frequent collaborator with hip-hop artists , and with the alternative rock band +44 , the rap rock group the Transplants , the alternative rock band Box Car Racer , and most recently with Antemasque .