JanneProeliator
Registered User
Odddly there are many performances and no sheets available. Copyright issues could be more complicated since Sibelius only passed away in 1957. But the copyright of this particular opus 113 Music Religieuse belongs to the GL of Finland, perhaps they can assist you to this lovely music.
This is an interesting article about Op.113:
http://www.angelfire.com/tx/masonmusic/sibelius.html
The rights to this music belongs to Suomi lodge #1 as there where no Grand Lodge of Finland when bro Sibelus composed the music. OR at least it was ordered by SUomi Lodge. Can't remember the history right now from my back pocket.