With her debut, Santogold introduced the world to a seamless punk-electro-dub cross-pollinator. Now comes a mixtape — as sprawling as the official album was tight — in which the Brooklyn artist and her producer, Diplo, flaunt just how many more songs and styles they've got up their sleeves. There's a bit of everything: Santogold remixes (a grime version of "Creator"); cheeky interpolations of LL Cool J's "I Need Love" and the B-52's' "Mesopotamia"; and on the punchy "Give It Up," an appearance by Diplo's romantic and musical ex, M.I.A. Musically, a dub and dancehall flavor predominates; moodwise, spirits are high and tongues are in cheek. (Check the cameo by Mark Ronson, offering to give Santogold an Amy Winehouse-style makeover.) And just for the hell of it, they toss in a jaw-dropper, "Icarus," where Santogold chants and croons over a desolate solo violin — the most purely beautiful record she's come up with yet.