This 'Amorosa Polka Mazurka' by Lumbye is a spirited and engaging dance piece, characteristic of salon music of the era. It blends the rhythmic vitality of a polka with the graceful sway of a mazurka.
Mastering the crisp articulation and rhythmic interplay between the melodic and accompaniment figures is key.
Amorosa Polka Mazurka 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 Amorosa Polka Mazurka lasts about 3 minutes.
Amorosa Polka Mazurka is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.