<P> Happy Nation (reissued as The Sign) is one of the best - selling debut albums of all time, and was certified nine times platinum in the United States . It was the first debut album to produce three No. 1 singles on the Billboard Mainstream Top 40 chart: "All That She Wants", "The Sign" and "Don't Turn Around". </P> <P> Following the formal departure of singer Linn in 2007, the band performed a series of concerts as a trio in Europe and Asia between 2007 and 2009 . Jenny Berggren said in November 2009 that she would be taking an indefinite leave of absence from the band to focus on a solo career . In 2009, Jonas and Ulf recruited two new female vocalists, Clara Hagman and Julia Williamson, and released The Golden Ratio in September 2010 . </P> <P> Clara and Julia departed from the group in 2012, and in March 2015, the compilation album Hidden Gems featuring unreleased songs and B - sides from the group's inception through 2005 was released, with promotion for the album being handled solely by Jonas and Ulf . </P> <P> In 1987, following a number of years as part of a new romantic and punk covers band called G Konrad, Jonas Berggren formed a band with two friends, Johnny Lindén and Niklas Tränk, for a school project; his sisters Malin, called "Linn", and Jenny, joined as singers . The new band went through several names: Kalinin Prospect after an avenue in Moscow; CAD (Computer - Aided Disco); and Tech - Noir, French for black technology, after a nightclub in the film The Terminator . They toured the clubs of Sweden with self - written material, techno inspired by the likes of The KLF and Snap! . Johnny left the group in 1989, and Niklas made his departure known by failing to appear at a performance, instead attending a Rolling Stones concert on the other side of town . Jonas asked his friend Ulf Ekberg to stand in for Niklas . The new quartet sought a new name to make a fresh start . Linn was reported to have said: "No one could pronounce the name of the group and nobody could remember it ." They settled on Ace of Base after Ulf was inspired by the music video for the Motörhead song "Ace of Spades". </P>

What happened to the band ace of base
find me the text answering this question