This represents the same work as the previous entry, demonstrating the gentle idiomatic writing of late 19th-century French piano music. It is a quintessential example of impressionistic salon style.
The performer must maintain a delicate, sustained touch to ensure the atmospheric resonance remains throughout the piece.
Comparable difficulty and character — good candidates for what to learn next.
Au lac imaginaire is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 7.
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 lac imaginaire lasts about 4 minutes.
Au lac imaginaire 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 Gymnopédie No. 1 by Erik Satie, Gnossienne No. 1 by Erik Satie, Canope by Claude Debussy — see the full similar-pieces list on this page.