Monet kiitokset tästä kauniista esityksestä!

The notes say it's a folksong. The arranger is Richard Faltin, and the lyrics are by a poet named Pekka Hannikainen. It's a traditional birthday song for women (could be for men too) but as you can hear, it's beautiful but not cheerful.

Hello! Is the original tune a folksong, or is the composer known? (the tune, not the arranger). Thanks!