Bortkiewicz's Op. 46 is a highly expressive piece that draws on the style of Rachmaninoff and Liszt. It is notable for its lush, chromatic late-Romantic harmonies.
At Henle 5 this is a late-intermediate piece — technically substantial, with musical demands to match. The main demands: a true singing tone, with the melody floating above the accompaniment; rubato that must breathe naturally without losing the pulse; and chord voicing — bringing out one note inside a handful of others.
Beyond that, expect careful pedaling — clarity depends on the foot as much as the fingers.
The main challenge lies in the complex voicing required to bring out the inner melodies within the dense chords.
Comparable difficulty and character — good candidates for what to learn next.
A level or two down with the same spirit — ideal if this piece is still out of reach.
Where this piece's skills lead: slightly harder works making similar technical demands.
Lesser-known works by the same hand, at a comparable level.
Elegie (Op.46) 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 Elegie (Op.46) lasts about 4 minutes.
Elegie (Op.46) 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 Elegy by Sergei Bortkiewicz, Die Zelle im Nonnenwerth by Franz Liszt, Ballade in E minor, JB 2:43 by Bedřich Smetana — see the full similar-pieces list on this page.