Jet Black Crayon is the instrumental post-rock outlet for former professional skater Tommy Guerrero, who also releases more eclectic, hip-hop oriented sets under his own name. (Back in the 1980s, Guerrero was also the bassist in the legendary -- mostly because of their truly excellent name -- skatepunk outfit Free Beer, whose career overview The Only Beer That Matters was released on Alternative Tentacles in 2002.) Following the release of his first solo album, Loose Grooves and Bastard Blues, in 1998, Guerrero was invited to open for Chicago post-rock outfit Isotope 217. Rath...