 Later the band were joined first by Rune Bergman on bass guitar and then by Sven-Olof Petersson on tenor and baritone saxophone.The group made their first EP as a quartet in the early 1960s ("Guitar Boogie").In the mid-1960s the group was popular in Sweden with hits such as "Te' dans me' Karlstatösera", "Ett litet rött paket", "Fröken Fräken", "Börja om från början", "Säj inte nej, säj kanske, kanske, kanske", "Vid din sida", Önskebrunnen and many others.