Aline is a charming early 19th-century salon piece written for the developing amateur market. Its structure follows the typical light, melodic conventions of the era.
Focus on the clarity of the ornamentation and the evenness of the left-hand Alberti-style accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
Aline 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 Aline lasts about 3 minutes.
Aline 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 Black Beauty by Duke Ellington, Berceuse by Rudolf Friml, Albumblatt by Moritz Moszkowski — see the full similar-pieces list on this page.