Jet Black Crayon was a band that included Tommy Guerrero after his success in the world of skateboarding - one of the prominent members of the 'Bones Brigade', Powell Peralta's professional skateboarding team that dominated the 1980s. (popularised by the film Lord of Dogtown).

Review of 'Inaccuracies of the Mind Machine':

"On their first full length release for Function 8 Records, Jet Black Crayon takes two steps sideways and nine leaps forward. The record is a beautiful whole, performed by Tommy Guerrero, Monte Vallier and Gadget, with drumming from Johnny Herndon (Tortoise, Isotope 217, A Grape Dope), Charlie Hall, and then some. It's been crafted and fine-tuned every inch of the way -- music for mourning stars and dapper dervishes."

Review of 'Experiments In The Space Metal Time Signature':

"This EP is the result of a request from Thomas Campbell(Galaxia) who came to some live improv shows Jet Black Crayon used to do on Sundays at Amnesia in San Francisco. He wanted the band to capture the drunken meandering vibe of those shows for this EP. At the shows Tommy Guerrero, Monte Vallier, Gadget, and Tim DeGaugh would usually do two sets of an hour to an hour-and-a-half, playing some Jet Black Crayon songs but mostly just making things up on the spot and rolling with them. The improvisations were atmospheric, and sometimes got heavy in a funk/soul sort of way. Experiments In The Space Metal Time Signature is Jet Black Crayon's favorite parts of a couple hours' worth of the studio recordings performed similarly." Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.