The Swan and the Wanderer

The Swan and the Wanderer is a Finnish film telling the story of two very popular Finnish singer/songwriters, Tapio Rautavaara and Reino Helismaa, who worked together until their relationship got fractious for a long time. The film covers the years from 1949 to 1965, the date of Helismaa's death.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.