These are the Billboard Hot Dance/Disco Club Play and Maxi-Singles Sales number-one hits of 2003.
Dance Club Songs is a chart published weekly between 1976 and 2020 by Billboard magazine. It used club disc jockeys set lists to determine the most popular songs being played in nightclubs across the United States.
"Hot Stuff" is a song by American singer Donna Summer from her seventh studio album Bad Girls (1979), produced by English producer Pete Bellotte and Italian producer Giorgio Moroder and released as the lead single from Bad Girls in 1979 through Casablanca Records. Up to that point, Summer had mainly been associated with disco songs but this song also showed a significant rock direction, including a guitar solo by ex-Doobie Brother and Steely Dan guitarist Jeff "Skunk" Baxter. It is the second of four songs by Summer to reach number one on the Billboard Hot 100.
"Ain't Nobody" is a song by American funk band Rufus and American singer Chaka Khan. It was released on November 4, 1983, as one of four studio tracks included on their live album, Stompin' at the Savoy (1983). "Ain't Nobody" quickly gathered popularity, and reached number one on the US Billboard R&B chart and number 22 on the US Billboard Hot 100. It has become one of Khan's signature songs.