I have a question about copyright. So I'm planning to audition for a local concerto competition with a community orchestra for next year, the piece I'm planning to audition with is Medtner's first piano concerto, opus 33. The work is public domain but the parts (individual scores for each orchestra player) aren't available on imslp, so the only way for the orchestra to get it is through borrowing through a rental fee from a publisher, like Boosey and Hawkes. Which is above their budget as it is a community orchstra.
So my question is, is it legal to make my own edition of a public domain score; so copying the full score into a notation software and producing the parts myself for this occasion, or would need some kind of permission from a Medtner estate (I'm not sure there is one).
I've already e-mailed the community orchestra and waiting for the response. But I'm interested to know if anyone here knows