Here's a transcription for solo piano you might like to play. It was originally written for two pianos and the cello, the cello being the swan gliding across water.
A. Siloti’s made a transcription for solo piano which you can hear beautifully recorded by Rachmaninoff in 1924 (available on YT at the time of making this video) https://www.youtube.com/watch?v=F7EMA0TJp2Q
To help piano students see clearly the “Swan melody-notes” to be voiced, I’ve highlighted them on the score. You can download the PDF sheet music (free for educational purposes) from this Google Drive link: https://drive.google.com/file/d/15Gmb8Fj5AijEIwNAtIArmIx5tb6Aedas/view?usp=sharing
My Patreon: http://www.patreon.com/paulbarton for those that like to support online creators from as little as 1$ a month.