the notes are in nwc but you can open midi and convert the sound to notes--but without the details.
if you convert this to mp3, be aware that the instruments have to be changed. what works for midi does not work for mp3, --example strings at the end of the piece can not work for mp3. they would have to be changed to cello in the bass and many other adjustments. [i would be happy to do this myself but have no access to any mp3 program]