Knucklehead is the first new Eric Ambel album in nearly a decade. This CD compiles 15 previously unreleased tracks recorded by Ambel in a variety of locations over the past 14 years with a variety of notable collaborators, including his fondly-remembered '80s band the Del-Lords, the Bottle Rockets, Andy York (John Mellencamp), Warner Hodges (Jason and the Scorchers), Will Rigby (the dB's), Tony Maimone (Pere Ubu), Tony Shanahan (Patti Smith), Ron Gremp (the Morells), Steven Terry (Whiskeytown), Martin's Folly and Ambel's Yayhoos cohorts Dan Baird, Keith Christopher and Terry Anderson.

Also lending a hand is Steve Earle, who contributes a previously unheard composition, "The Usual Time," and adds vocals to a new version of the Del-Lords chestnut "Judas Kiss."