This is a salon-style piece by French composer Louis Ganne, typical of the late 19th-century parlor repertoire. It is distinguished by its graceful, flowing melodic lines and gentle harmonic support.
Focus on maintaining a smooth, singing melody line against the accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
Calme du soir is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 4.
You should be comfortable at Henle level 3 — meaning you can already play level 2–3 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 Calme du soir lasts about 3 minutes.
Calme du soir 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 Au Matin by Benjamin Louis Paul Godard, Au Matin by Benjamin Godard, Au Matin by Benjamin Louis Paul Godard — see the full similar-pieces list on this page.