This is the opus-designated version of Jongen's atmospheric impressionistic piece. It demonstrates a sophisticated approach to texture that bridges the gap between Romanticism and early 20th-century impressionism.
Ensure the voicing clearly defines the melody above the complex, shifting background textures.
Comparable difficulty and character — good candidates for what to learn next.
Calmes, aux quais déserts (Op.54) 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 Calmes, aux quais déserts (Op.54) lasts about 4 minutes.
Calmes, aux quais déserts (Op.54) 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 Calmes, aux quais déserts by Joseph Jongen, Bourrée dans le style ancien by Joseph Jongen, Berceuse by Heinrich Gottlieb Noren — see the full similar-pieces list on this page.