Drummer Sly Dunbar and bassist Robbie Shakespeare are the A team when it comes to reggae rhythm sections. The Jamaican duo of musician-producers have backed numerous reggae mainstays — including Peter Tosh, Gregory Isaacs, Bunny Wailer, Sugar Minott, Black Uhuru, Mighty Diamonds and Dennis Brown — but they’ve also demonstrated their prowess and versatility by sitting in with such folks as Material, Grace Jones, Herbie Hancock, Madonna, Bob Dylan, Serge Gainsbourg and Britney Spears.