Hummel's Capriccio is a representative work of the late Classical period, showcasing his mastery of keyboard virtuosity. It features nimble finger-work and formal clarity characteristic of his transition toward Romanticism.
The player must maintain absolute clarity of articulation during the rapid, flowing sixteenth-note passages.
Comparable difficulty and character — good candidates for what to learn next.
Capriccio for Piano is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 8.
You should be comfortable at Henle level 6 — meaning you can already play level 5–6 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 Capriccio for Piano lasts about 6 minutes.
Capriccio for Piano 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, Cadenza to Mozart's Piano Concerto No.20 by Johann Nepomuk Hummel, 10 Variations on "Unser dummer Pöbel meint" for Piano in G Major by Wolfgang Amadeus Mozart — see the full similar-pieces list on this page.