Mel Bonis composed several works exploring the twilight mood, utilizing lush Impressionist harmonies. This piece is noted for its fluid, dreamlike textures that bridge the gap between late Romanticism and the French impressionist movement.
Focus on the layering of voices and the refined use of the damper pedal to sustain the atmospheric texture.
Comparable difficulty and character — good candidates for what to learn next.
Au Crépuscule (Op.111) is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 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 Au Crépuscule (Op.111) lasts about 4 minutes.
Au Crépuscule (Op.111) 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 Berceuse by Mel Bonis, Barcarolle by Mel Bonis, Barcarolle-Etude by Mel Bonis — see the full similar-pieces list on this page.