Bonheur fugitif is a salon piece by Ernest Patierno characteristic of late 19th-century sentimental piano writing. It relies on a simple melodic line supported by broken chord accompaniment, common in parlor music of the era.
Focus on maintaining a seamless cantabile melody against the rhythmic accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
Bonheur fugitif 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 Bonheur fugitif lasts about 3 minutes.
Bonheur fugitif 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 Butterfly Lovers by Shuwen Zhang, Berceuse du petit soldat blessé by Cécile Chaminade, Barcarolle by Samuil Maykapar — see the full similar-pieces list on this page.