DESCRIPTION:
Rachmaninoff wrote Vocalise for voice and orchestra. There are numerous transcriptions for piano, the Richardson is best known.

Recently it was transcribed by a young musician, Anton Borodin which I play in this recording as I prefer it above the others. I'm uncertain about the copyright situation but the PDF score is currently available for free download at:

http://en.scorser.com/S/Sheet+music/Rachmaninov+Vocalise/-1/1.html

From this link, you will see the following:
"Rachmaninov, Sergei (1873-1943). Rachmaninov-Borodin - Vocalise Op.34 No.14.
Download: Direct link"

Click on the "Direct link" tab. which will activate the free PDF download I used in this recording.