Thanks for the soundtrack, Marieh!
Oskar Merikanto were a finnish composer and organist 1868-1924. He has also made several piano compositions and songs to piano. I like hes nordic melancholi and have tried to arrange some of them for guitar. Check the webadress on the sheets for more.
Valse Lente is probably the most known piano piece by him and there are some guitarversions in Internet. This piece "Mustalainen" are not written by Merikanto, he has only done the arrangement I have used. Wiki says the composer is: Elemér Szentirmay. Publiced in Hungary 1875.