This set of 32 variations utilizes a repetitive, relentless bass theme to explore a vast range of keyboard textures. It is distinctive for its uncompromisingly focused, architectural approach to the theme-and-variations form.
The primary challenge is maintaining consistent, articulate fingerwork and rhythmic precision throughout the rapid, dense variation textures.
Comparable difficulty and character — good candidates for what to learn next.
32 Variations in C minor (WoO 80) is rated Henle level 7 of 9 — late advanced repertoire, roughly ABRSM grade 8 and above. In the RCM system it corresponds to about level 10.
You should be comfortable at Henle level 7 — meaning you can already play level 6–7 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of 32 Variations in C minor (WoO 80) lasts about 11 minutes.
32 Variations in C minor (WoO 80) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Piano Sonata No. 8 'Pathétique' by Ludwig van Beethoven, Piano Sonata No. 23 'Appassionata' by Ludwig van Beethoven, Piano Sonata No. 21 'Waldstein' by Ludwig van Beethoven — see the full similar-pieces list on this page.