At the Cemetery is a sombre, evocative work by Russian composer Aleksandr Winkler. It utilizes heavy, chordal textures and chromaticism to create a profound sense of mourning and solemnity.
Deep, resonant voicing is required to achieve the necessary weight and solemn tone.
Comparable difficulty and character — good candidates for what to learn next.
At the Cemetery (Op.23) is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 7.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 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 At the Cemetery (Op.23) lasts about 5 minutes.
At the Cemetery (Op.23) 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. 14 'Moonlight', No. 2 by Ludwig van Beethoven, Gymnopédie No. 1 by Erik Satie, Passacaglia by George Frideric Handel — see the full similar-pieces list on this page.