Adrian and Paul Gurvitz might be better known for their travels with Ginger Baker in the Baker Gurvitz Army, but in the late '60s the brothers helmed the heavy rock trio Gun and caught a whiff of success in the U.K. with their debut single "Race with the Devil." Using the less-ethnic surname Curtis, Adrian (guitar) and Paul (bass) teamed up with drummer Louis Farrell and pounded out some distinctive psych-flavored proto-metal.