Variations on a Theme of Chopin (Rachmaninoff)

Variations on a Theme of Chopin (, "Variatsii na temu F. Shopena"), Op. 22, is a group of 22 variations on Frédéric Chopin's Prelude in C minor (Op. 28, No. 20), composed by Sergei Rachmaninoff in 1902–03. In the first edition, it is noted that 3 of the variations and the final Presto section can be omitted if the performer wishes.
Variations.
The form of the piece is: