Preston Lea "Trey" Spruance III (born August 14, 1969) is an American composer, producer, and musician, perhaps best known as guitarist and keyboardist with Mr. Bungle. He is also leader of the multi-genre outfit Secret Chiefs 3. Originally a guitarist and trumpeter, Spruance later began playing vintage electronic organs, saz, santur, electric sitar, tar, pipa, and various other string and percussion instruments.