Pinhead Gunpowder are an East Bay punk rock band consisting of Aaron Cometbus (drums, lyrics), Bill Schneider (bass), Billie Joe Armstrong (guitar, vocals) and Jason White (guitar, vocals). Sarah Kirsch (guitar, vocals) of Fuel (think Monuments to Excess) was in the band when they first formed in 1991, but eventually left, citing personal differences with Green Day (the band for which Billie Joe Armstrong is most famous). The band's name comes from a brand of "high octane" green tea discovered serendipitously by Aaron Cometbus during one of his many dumpster diving adventures.