Swedish singer and translator, born 1951. He was singer in the rock band Fiendens Musik (1977-), the blues band Bluesblocket (1980-), the retro prog band Svenska Musikrörelsen (2001-) and the Ljungbyheds-based pub rock band Micke Japp (2015-), whose name refers to Mickey Jupp.
Zetterberg is the author of the debate book "Behöver vänstern gå i terapi?" (1976) together with Jan Josefsson, and was the owner of the record store Living in the Past in Lund until 2006. He started the alternative record company "Tredje Tåget". From 2009 he is also active as a translator by, among others, Willy Vlautin.