From 2007-2012, Beller toured with the "band" Dethklok, a tongue-in-cheek extreme metal band born of the Cartoon Network "Adult Swim" show Metalocalypse; Beller tracked on the last two Dethklok releases (Dethalbum III; The Doomstar Requiem) and anchored the band for three nationwide tours, alongside Mastodon and Machine Head, among others. Meanwhile his work with guitarist Mike Keneally (Frank Zappa) continued, on releases such as DOG (2004), Guitar Therapy Live (2006), Scambot: One (2009), and bakin' at the potato! (2011). Beller's first instructional DVD, Mastering Tone And Versatility, was released by Alfred Publishing in early 2012, and he's also a featured artist on the instructional website Jamplay.com.
