Did you love M.I.A.'s song Paper Planes last year? Do you like space-age weaponry but have difficulty spelling it? If so, or if not, check out Major Lazer's new album, Guns Don't Kill people-Lazers Do. (Man, if ever an album title needed three exclamation points.)  Major Lazer is a production duo made of Diplo and Switch, the former being M.I.A.'s longtime collaborator and the latter being the coproducer of her Kala. The album is "Jamaican music at its roots" except apparently with lazers, featuring vocalists like Vybz Kartel and Santigold. Early reviews are strong and they are still on tour, particularly if you are in Denmark this week.