External Combustion

The Zoo Crew just dropped the needle on "External Combustion," the title cut from Mike Campbell & The Dirty Knobs' second record, and if you have been riding with the Zoo Freaks for a while you already know how this one lands. It is four minutes and change of riff, room, and no apologies, the kind of track that makes a freeform rock station feel like a garage with the door up. You can hear the whole thing spinning right now over at THE ZOO, where the Crew still believes a song should be allowed to breathe before anybody starts talking over it.

Campbell has told the story of the title more than once, and it is a good one. He was turning a phrase over in his head, landed on internal combustion, then shook his head. No, he said, this band is more like an external combustion type of outfit. That is the whole idea of the Knobs in one line. They are not a side project he threw together after the Heartbreakers. He has said they have been together nearly twenty years, off and on, long enough to develop telepathy. The name itself comes from old amp-tech slang for a broken knob on a dial. Fitting, for a band that likes the dial a little crooked.

The song itself almost got away from him. In a Forbes sit-down around the album, Campbell said the title track started as an old analog tape. His tech was cataloging the vault, played the reel back, and Campbell had completely forgotten it was there. He liked the riff, finished the thing, and they cut it. He has said about half the album was new writing and the rest came out of that vault, sketches from years back, some of them going as far as the 1980s and 1990s. "Wow, that almost got away," is how he put it to American Songwriter. "I've got to finish that one." "State of Mind," the one with Margo Price, was another forgotten tape. "Cheap Talk" was pulled out and recut. The title track was the riff that refused to stay buried.

He has also talked about what the lyric is doing. On a band breakdown of the record he described a character who keeps showing up in his songs, a guy running from something, the cops or the past or the world, trying to get to some place of redemption. "Just tell me the truth," he said of this one. "External combustion, you know, project. And that song I think would be some sort of love." He noticed the same figure going all the way back to "Refugee." He figured it might be therapeutic and he might be exercising his own demons without knowing it. Looking back at the album later, he allowed that some of the words seemed indirectly about being isolated and trying to find a better world than the one you are in. He laughed and called it subliminal.

The way they cut it matches the title. Campbell told interviewers he likes records with hardly any overdubs, so the tape sounds like the band sounds when they play. Reckless abandon, in the moment, not under-rehearsed but never polished to death. Guitarist Jason Sinay has said Campbell loves it when the band does not totally know the songs yet. Wide-eyed, freaking out, ears open. That is the magic. Drummer Matt Laug remembered times on this record where Mike was showing them the song as they were recording, and that became the take. George Drakoulias produced, and Campbell's highest praise for him was simple: he is funny, he puts everybody in a good mood, and he makes it like a party. The long fade at the end of the title track was Campbell's call. Once they know a song they just play through, and if he wants to go a little longer, they go with him.

The rest of the record is the same gang having the same kind of day. Ian Hunter turns up on "Dirty Job." Benmont Tench brings the Jerry Lee energy to "Lightning Boogie." "Electric Gypsy," named for one of Campbell's guitars, a mosaic job in mother-of-pearl and abalone, was written and cut the same day in one pass. He was sketching the lyrics as the band walked in the door. Little amps, turned up. A Duesenberg patterned after a Princeton in the room, another Princeton in the bathroom, close mic and room mic. He has said he went to see Neil Young play through a little tweed amp with a microphone on it and a big PA behind it, and it sounded huge. That is the lesson he took into this record.

Before any of that, there was a kid in Florida. Michael Wayne Campbell was born in Panama City and grew up in Jacksonville, graduating from Jean Ribault High in 1968. His dad was an Elvis and Johnny Cash man, which is where he first noticed what a guitar was doing inside a song. The Beatles hit his school and changed the plan. At sixteen his mother bought him a pawnshop Harmony acoustic for about fifteen dollars. He has called it unplayable, and he did not know any better. His first electric was a cheap Guyatone, sometimes remembered as a sixty-dollar Goya. He formed a short-lived blues trio called Dead or Alive. Then his roommate, drummer Randall Marsh, was auditioning for a Gainesville band called Mudcrutch that had just lost a guitar player. Campbell was in the next room. They called him in. He showed up with the little Japanese guitar, and he has said they all laughed. He offered "Johnny B. Goode." They stopped laughing. Tom Petty told him they had to get him a better guitar. He quit college. Petty, he later joked, threatened to break his fingers if he did not join the band. Mudcrutch became the band around Gainesville, moved to Los Angeles in 1974, cut one single for Shelter, and fell apart. Out of that came Tom Petty and the Heartbreakers, and Campbell spent the next four decades as the guy who wrote or co-wrote "Refugee," "Here Comes My Girl," "You Got Lucky," "Runnin' Down a Dream," and a long list of others, while also lending his hands to Don Henley, Bob Dylan, Stevie Nicks, and a turn with Fleetwood Mac.

The Knobs were the room he kept for himself, started around 2000 so he could write and play clubs between Heartbreakers tours. A couple of tunes that began with the Knobs even ended up on the Heartbreakers' Mojo. After Petty's death he finally put the band on a record, Wreckless Abandon in 2020, then External Combustion in 2022, then kept going. He has said he feels comfortable with a gang around him. That is how he grew up, and that is still what he likes. The official home for all of it is thedirtyknobs.com, where the band's own pages still carry the story of External Combustion alongside everything that came after. The Crew is also on Facebook, Instagram, and X. Fans who want the longer conversation tend to gather with the Knob Mob in Tom Petty Nation, where Campbell's songs, old and new, still get passed around like bootlegs. Spin it again, Freaks. The riff was buried in a tape box for years. It sounds better out in the open.