Hans Christian Lumbye's 'Alexandra Polka' is a spirited dance piece characteristic of the mid-19th century. It is marked by its clear melodic lines and energetic rhythmic drive, typical of popular salon music.
Requires precise rhythmic articulation and facility with quick repeated notes and scalar passages.
Alexandra Polka is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 4.
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 Alexandra Polka lasts about 2.5 minutes.
Alexandra Polka is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.