Dan Hannon is an American record producer, audio engineer, mixer, songwriter, and musician. He has produced, co-produced, co-written, and/or performed on albums that have sold over 4.5 million copies, and that have streamed over one billion times. His current Billboard chart success includes two number one albums, three number one songs, 13 top ten albums, 15 top twenty albums, three top ten rock albums, and four top ten alternative albums. He co-produced the album Cope, released on April 1, 2014, with the Manchester Orchestra. He produced the Simple Math album, which was released on May 10, 2011, for Manchester Orchestra.