Sporting a name inspired by guys like Lt. Stitchie and General Echo, Major Lazer appears to be a party-starting dancehall-reggae soldier with an old-school bent. In fact, he's a fantasy-baseball composite cooked up by producers Diplo and Switch (M.I.A., Santigold) with a fresh crop of Jamaican microphone fiends and kindred spirits. Gun nut Einstein trades XXX rhymes with Philly art girl Amanda Bla...