Founding member and keyboardist for the chart-topping Swedish pop group Ace of Base. He was nicknamed Buddha.
He and Ace of Base released their debut album Happy Nation in 1993. They became a worldwide phenomenon, selling 23 million copies internationally.
He was reported to be in a Neo-Nazi band called Commit Suiside, according to a 1993 Swedish newspaper expose. He expressed regret over his time with the group, but he insisted the songs attributed to the group were not his.
He dated the Swedish supermodel/actress Emma Sjöberg.
He and Jenny Berggren, former lead singer of Ace of Base, disagreed publicly over her role in the band and her alleged exclusion from the songwriting process.