Free.

Famed for their perennial "All Right Now," Free helped lay the foundations for the rise of hard rock, stripping the earthy sound of British blues down to its raw, minimalist core to pioneer a brand of proto-metal later popularized by 1970s superstars like Foreigner, Foghat and Bad Company. Free formed in London in 1968 when guitarist Paul Kossoff, then a member of the blues unit Black Cat Bones, was taken to see vocalist Paul Rodgers' group Brown Sugar by a friend, drummer Tom Mautner. After deciding to form their own band, Kossoff and Rodgers recruited drummer Simon Kirke (si...