Mike Campbell's band the Dirty Knobs will release its second album on March 4th. External Combustion finds the former Tom Petty & the Heartbreakers member working with former band mate keyboard player Benmont Tench on a track titled Lightning Boogie. Another notable guest on the eleven song release is Mott The Hoople veteran Ian Hunter. Campbell says that on the follow-up to the excellent 2020 debut album from the group that, "The longer we played, the more intuitive it got." That process inspired the album's title. Preview a track from the album here.