Lasse Mårtenson

Lars Anders Fredrik "Lasse" Mårtenson (24 September 1934 – 14 May 2016) was a Finnish singer, composer, actor and theater conductor. He was born in Helsinki. He performed at the Eurovision Song Contest in 1964 with the song "Laiskotellen" ("Idling").
Mårtenson died of a cerebral haemorrhage, aged 81.