Composer Fridrich Bruk (he was born in Ukraine in 1937, emigrated to Finland in 1974) has written a symphony in memory of Roine Rautio.
Apparently he had the chance to know the composer personally, so he dedicated his 4th Symphony to him.
Here, the first 11 minutes is Roine Rautio's suite on the themes of Kalevala:
Regarding his father, here is 1st page of his "Symphony No. 1", but it seems to be a piano score:
http://rkna.ru/projects/mosaic/img/huge/2082.jpgAll in all, Roine Rautio mixed Sibelian influences with the Russian school in quite an interesting way.