IMSLP Forums

Please PLEASE upload these great pieces if possible, IMSLP
yes the Prokofiev Sinfonia Concertante DOES exist however its copyright is Non-PD-US and Non PD EU
or do I have to wait?
the Kodaly doesn't exist though...

Both are not possible at present. Prokofiev is blocked as you noted, and Kodály won't be appearing on the site until 2018.