This piece is a characteristic example of Kirnberger's pedagogical keyboard works from the mid-18th century. It is musically distinctive for its balanced phrasing and clean, imitative textures typical of the galant style.
The primary challenge is maintaining consistent articulation across the contrapuntal lines.
Comparable difficulty and character — good candidates for what to learn next.
Allegro fürs Clavier 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 Allegro fürs Clavier lasts about 2 minutes.
Allegro fürs Clavier 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 Allegro in D major by Johann Philipp Kirnberger, Allegro in A-flat major, EngK 50 by Johann Philipp Kirnberger, 12 Variations on 'Ich schlief da träumte mir', EngK 68 by Johann Philipp Kirnberger — see the full similar-pieces list on this page.