Jonas Erik Altberg (born 22 December 1984, Halmstad, Sweden) better known by the pseudonym Basshunter, is a Swedish producer and singer-songwriter, best known for his number one hits Boten Anna and Now You're Gone. He started to produce music under the stage name "Basshunter" in 2002 with the computer program Fruity Loops, and released his first albums, The Old Shit (2002) and The Bassmachine (2004), through his own website.