After the passing of Chester Bennington, both Young and Johnson started working for Fall Out Boy. It was there they rounded up a third roadie to play bass, Brian Diaz, Pete Wentz’s long-time bass tech. Collectively the members of Knifes have worked for some of the biggest artists in the world, touring globally with Guns ‘N Roses, Slipknot, Deftones, Bush, Stone Temple Pilots, Black Eyed Peas, Pharrell Williams, Linkin Park, and Fall Out Boy, and that doesn’t even being to scratch the surface.
The Burbank California band's debut EP, Proof of Concept, which time travels back to hard-hitting, anthemic '90s rock, was self-produced alongside Linkin Park engineers Josh Newell and Ethan Mates. Taking advantage of their roadie connections, the band stole studio downtime from Linkin Park to track drums. The EP feels familiar, with the musicians drawing on their collective influences and years in the music industry on each track.