Just Dance (feat. Colby O'Donis)

"Just Dance" is the debut single by American singer Lady Gaga. She co-wrote the song with Akon and his producer RedOne. It also features vocals from Colby O'Donis and was released on April 8, 2008, as the lead single from Gaga's debut studio album, The Fame. The song was written by Gaga in 10 minutes as "a happy record". "Just Dance" lyrically speaks about being intoxicated at a club.

"Just Dance" received acclaim from music critics, who complimented its club, anthem-like nature and the sound associated with it. The song was a sleeper hit, spending almost five months on the Billboard Hot 100 before finally peaking at the chart's summit in January 2009. Outside of the United States, "Just Dance" topped the charts Australia, Canada, Greece, Ireland, the Netherlands, and the United Kingdom, as well as the top ten of the charts in the Czech Republic, Denmark, Germany, Hungary, Israel, New Zealand, Norway, Spain, and Sweden. The single is among the best-selling singles of all time, having sold over 10 million copies.

"Just Dance" is an uptempo electropop, synth-pop and dance-pop song, combining synths of clipped marching beats with soaring electronics. It is written in the key of C♯ minor and is set at a moderate dance tempo of 119 beats per minute. Gaga's vocal spans from the low note of G♯3 to the high note of C♯5. The song begins with a fast tempo following by the synth arrangement and Gaga uttering "RedOne". "Just Dance" has a basic progression of C♯m–E–B–F♯m. O'Donis sings the interlude in the same range as Gaga followed by an R&B-influenced interlude by her, after which the chorus is repeated with O'Donis providing backup vocals and the marching beats. The song ends with an echoing of the word "dance".

Lyrically, "Just Dance" throws a partial tongue-in-cheek perspective with lyrics like "What's going on on the floor? / I love this record, baby but I can't see straight anymore". The lyrics deal with being completely intoxicated at a party. The opening lyric "RedOne" has often been misinterpreted as "red wine" but in actuality is a reference to music producer RedOne.