This is a cheerful and energetic polka, typical of Lumbye's popular dance music. Its musical distinctiveness is found in its driving rhythm, clear melodic lines, and festive atmosphere.
Focus on clear, staccato articulation and a steady, buoyant pulse.
Blance Polka is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 5.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 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 Blance Polka lasts about 2 minutes.
Blance Polka is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.