Gastr del Sol (derived from a combination of the name of a race horse (Gato del Sol) and David Grubbs' previous band Bastro) was a Chicago band consisting, for most of their career, of David Grubbs and Jim O'Rourke. Between 1993 and 1998 they put out seven albums ranging in genre from post-rock (the scene they were most associated with) to musique concrète.