David Grubbs is an American composer, guitarist, pianist, and vocalist. He 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.

Red Krayola is an American avant rock band from Houston, Texas formed in 1966 by the trio of singer/guitarist Mayo Thompson, drummer Frederick Barthelme, and bassist Steve Cunningham.