 The band also experimented with use of piano, organ and "musique concrète" compositions, foreshadowing McEntire's and Grubbs' subsequent musical projects.Bastro was formed by Louisville, Kentucky guitarist David Grubbs after his former band Squirrel Bait folded in 1987.Grubbs had moved to Washington, D.C. to attend Georgetown University where he started an early version of Bastro with bassist Dan Treado, who soon left.