Ace of Base is a pop band based in Gothenburg, Sweden. Its original lineup consisted of Ulf "Buddha" Ekberg, and three siblings, Jonas "Joker" Berggren, Malin "Linn" Berggren and Jenny Berggren. They released four studio albums between 1993 and 2002, which sold in excess of 37 million copies worldwide.

Happy Nation / The Sign is one of the best-selling debut albums of all time, and was certified ten times platinum {Diamond) in the United States. It was the first debut album to produce three number 1 singles on the Billboard Mainstream Top 40 chart: "All That She Wants", "The Sign" and "Don't Turn Around".