Kelis doesn't shake much milk on her first record in four years. Instead, she brings it to a slow boil. Flesh Tone is a foray into the percolating house, moody electro and hard trance grooves that pump up airplane-hangar-size Euro clubs. She's always had an impressionistic vision of R&B, but this isn't just a curveball for the hell of it; she uses escapist tracks (written with guys like David Guetta and Jean Baptiste) to realist ends, exploring her recent divorce from Nas and life as a single mom. It's the classic throb of disco liberation.