This sonatine by Théodore Lack serves as a bridge between late-Romantic salon style and instructional literature. It requires a refined touch and attention to varied articulation marks.
Pay close attention to the phrasing and ensure the left-hand accompanimental figures do not overpower the melody.
Comparable difficulty and character — good candidates for what to learn next.
1ère sonatine 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 1ère sonatine lasts about 2 minutes.
1ère sonatine 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 Canzonetta giocosa by Théodore Lack, Bonne brise by Théodore Lack, Boléro by Théodore Lack — see the full similar-pieces list on this page.