Joseph Bengraf's G minor polonaise captures a more dramatic and introspective tone than the typical major-key examples of the time. Its minor mode provides a distinct shift from the usual courtly cheerfulness associated with the dance.
The primary challenge is executing the minor-mode ornamentation with proper stylistic sensitivity.
Comparable difficulty and character — good candidates for what to learn next.
Alla polacca in G minor 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 Alla polacca in G minor lasts about 3 minutes.
Alla polacca in G minor 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 A major by Joseph Bengraf, Cantabile in E major by Joseph Bengraf, Waltz in A minor by Frédéric Chopin — see the full similar-pieces list on this page.