Sven-Ingvars is a pop/rock group from Slottsbron, Sweden. The band was formed in 1956 by Sven Svärd, drums Ingvar Karlsson, guitar and accordion and Sven-Erik Magnusson, song, guitar and clarinet. Later Rune Bergman joined on bass guitar and even later Sven-Olof Petersson on tenor and baritone saxophone.