The Hep Stars are a Swedish rock band formed in Stockholm in 1963. During 1965-1966 the band was the most successful of contemporary 1960s Swedish pop groups performing in the English language. Outside the Nordic countries the band is best known as a launching point for the keyboard player, lead guitar and composer Benny Andersson, who went on to enjoy worldwide success with ABBA.
The band was founded by the drummer Christer "Chrille" Pettersson and the bass guitarist Lennart "Lelle" Hegland with the keyboard player Hans Östlund and the lead/rhythm guitarist-singer Jan "Janne" Frisk. At the height of their popularity, the line-up consisted of Hegland, Pettersson, Frisk, Sven Ove "Svenne" Hedlund on lead vocals and Benny Andersson on keyboards and lead guitarist.