Ace of Base are a Swedish pop group formed in 1987, originally consisting of siblings Jonas, Linn, and Jenny Berggren, with Ulf Ekberg. They achieved worldwide success following the release of their debut album, Happy Nation, in 1992. Later re-issued as The Sign, it was certified nine times platinum in the United States and was the best-selling album of 1994. One of the most successful debut albums of all time, it was the first to produce three No. 1 singles... [more on Wikipedia]