The national discoraphy of Finland
"VIOLA is the Finnish national discography and the national bibliography of sheet music.
VIOLA-database contains in total 1 031 878 cataloguing records. On an average 55 000 records are added each year.
VIOLA contains references to Finnish sheet music since 1977 and to sound recordings since 1901.
Cataloguing covers both the whole recording/publication and the individual compositions contained in it. Searches can be made with, e.g., the name of the composer or the performer as well as the title or the first line of a song."
more userfriendly interface (with same Id's): https://www.finna.fi/