This waltz by Johann Nepomuk Hummel captures the early transition from the minuet to the more fluid waltz form of the 19th century. It features the composer's characteristic clean textures and idiomatic piano writing.
Focus on consistent 'oom-pah-pah' pacing without rushing the second and third beats.
Comparable difficulty and character — good candidates for what to learn next.
Assembly Waltz is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
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 Assembly Waltz lasts about 4 minutes.
Assembly Waltz 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 Alla polacca by Johann Nepomuk Hummel, Andantino in A-flat major by Johann Nepomuk Hummel, Allegro by Johann Nepomuk Hummel — see the full similar-pieces list on this page.