A contemporary piece for piano duo (or solo piano adaptation) that explores complex timbral textures and modern harmonic language. It is distinctive for its atmospheric use of silence and sparse, deliberate note placement.
Coordinating complex polyrhythms between the two hands or players is the central technical hurdle.
Comparable difficulty and character — good candidates for what to learn next.
'Three Trees'for Piano Duo Op.53 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 'Three Trees'for Piano Duo Op.53 lasts about 9 minutes.
'Three Trees'for Piano Duo Op.53 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 Ballade Légendaire No.1 by Gustav Satter, La cathédrale engloutie by Claude Debussy, Pictures at an Exhibition by Modest Mussorgsky — see the full similar-pieces list on this page.