Listen to Onnelliset online. Onnelliset is a Finnish language song and is sung by Leevi And The Leavings. Onnelliset, from the album Mies joka toi rock'n'rollin Suomeen (Remastered), was released in the year 2015. The duration of the song is 2:49. Download Finnish songs online from JioSaavn.