Hans Christian Lumbye's 'Alexandra Vals' is a charming and lively waltz from the Romantic era, designed for social dancing. It features infectious melodies and a characteristic, buoyant rhythmic pulse.
Needs a light touch and a strong sense of the triple meter to capture the dance's spirit.
Alexandra Vals 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 Vals lasts about 3 minutes.
Alexandra Vals is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.