David Grubbs (born September 21, 1967), composer, guitarist, pianist, and vocalist, was a founding member of Squirrel Bait, Bastro, and Gastr del Sol. He has also played in Codeine, The Red Krayola, Bitch Magnet and The Wingdale Community Singers.
Grubbs' first band was a brief-lived punk/new wwave group called The Happy Cadavers that released the 4-song 7" record With Illustrations in 1982. Grubbs then formed a hardcore punk band, originally called Squirrelbait Youth that later evolved into the influential Louisville, Kentucky group Squirrel Bait, releasing a 12" EP and an album on Homestead Records. Grubbs's next group was the post-punk power trio Bastro, which released and EP and two albums on Homestead. In 1991 Bastro morphed into the more avant-garde Gastr del Sol. This project soon became essentially a partnership between Grubbs and Jim O'Rourke after the band's first album. The albums released by the duo include Crookt, Crackt, or Fly, Upgrade & Afterlife, and Camoufleur. In this period, Grubbs also contributed to other projects, including guitar for two tracks on Codeine's 1994 album The White Birch, and guitar, piano, and harmonium on recordings by Palace Music, Will Oldham, Royal Trux, Dirty Three, Matmos, Richard Buckner, Tony Conrad, Pauline Oliveros, Arnold Dreyblatt, and many others.