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A new track from R&B rebel Kelis has been unleashed upon an unsuspecting world. Anyone worried her four-month-old baby (or recent divorce from Nas) has watered down her milkshake can breathe easy—that’s not possible for someone this bossy.

The ever-savvy Kelis hasn’t lost her instinctual grasp of what modern club music needs: in today’s case, we could use some effervescent joy. To that end, “Acapella” is Donna Summer-styled retro-disco that nevertheless feels effortlessly fresh. Kelis’ voice recalls the Queen of Disco’s ethereal yearning for love on Bad Girls tracks like “Lucky” and “Our Love,” but with an added scoop of earthiness, and shades of Giorgio Moroder. Check the “we’ve been partying so long I think I see the sun rising” vibe:

This song isn’t unlike the recent efforts from Hercules and Love Affair, the New York-based musical collective who similarly mine the after-dark sounds of the ’70s. One can’t help but dream a collaboration might be in the works….

According to Kelis’ website, she’s nearly completed a new album, her first since 2006’s Kelis Was Here. Does “Acapella” bode well for dancefloors in 2010?

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