"Acapella" is a song performed by American recording artist Kelis, taken from her fifth studio album Flesh Tone (2010). The song is a departure from her past singles in that it is a dance/electronic track rather than hip hop/R&B influenced. The song was first premiered on her Twitter page and her official website in November, but was digitally released February 23, 2010 as the lead single from the singer's fifth studio album Flesh Tone.

The song's co-writer Makeba Riddick revealed that the song had previously been called "Majestic". Kelis stated that she wrote the song "with love and life in my mind" and as a tribute to her son, Knight. It has received positive reviews from critics many of whom praise the song for its inspirational lyrics and for its uptempo feel-good vibe which includes angelic harmonies. The song was listed at #20 on the NME's best tracks of 2010, which they describe it "her most thrilling tune since ‘Milkshake’".

The single has so far received universally positive reviews. Pitchfork Media gave the song a positive review, rating the track an 8 [out of a possible 10] and saying: "'Acapella' is a smooth, Donna Summer-style track with Kelis as an icy electro queen, a robotic embrace of house's metronomic bliss."About.com's "Dance Music" section reviewed the track favorably, calling the song "majestic" and named it its "Song of the Day".Entertainment Weekly called the song a "feathery dance-floor delight" and placed the song on its "The MustList" for 2010 whilst Billboard magazine added the song to its 2010's "Best Bits" listing.NME magazine also loved the song calling it "the most thrilling tune since "Milkshake" whilst Heat said the "banger" deserves four stars.

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