Malmkvist has been a contestant in the Swedish Melodifestivalen several times , most recently in 2004 together with Towa Carson and Ann-Louise Hanson , singing the song " C'est la vie " , which finished 10th . She represented Sweden at the international Eurovision Song Contest 1960 in London with " Alla andra får varann " , a song originally performed by Östen Warnerbring and Inger Berggren respectively in the Swedish pre-selections . In turn , the following year Malmkvist , who famously forgot the lyrics to the song during her performance , and Gunnar Wiklund both won Melodifestivalen with the song " April , april " , but then Sveriges Radio selected Barbro " Lill-Babs " Svensson as the Swedish representative at the international Contest , held in Cannes . In 1969 Malmkvist again returned to Eurovision , but then performing the West German entry " Primaballerina " at Madrid , incidentally finishing shared 9th with the Swedish entry " Judy , min vän " , sung by Tommy Körberg
Eurovision Song Contest 1960
Eurovision Song Contest 1960
Siw Malmkvist