Genesis are a prog-rock band that spawned two unlikely pop careers: their own, and that of their former lead singer (the one with the soft and husky voice). Since leaving the band in 1975, Peter Gabriel's capricious muse has led him on a merry dance. First in the recording of four eponymous albums of exploratory world music, pastoral folk-pop, industrial funk, and anti-apartheid protest; then in the creation of So, the blockbuster 1986 album that finally turned him into a proper pop star, with Kate Bush duets and everything. That voice is the sole sonic constant in a career of persistent tinkering.