Also known by his pseudonym Heikki Hovi, was one of the most prominent Finnish singers during the 1940s and the 1950s, though he continued to perform until the late 1980s. His most famous songs are inclusive of "Syyspihlajan alla", "Liljankukka", "Hiljaa soivat balalaikat" and "Satumaa". Theel has participated in more than five-hundred songs and roles throughout his career. Theel also performed as an actor in at least five films
