Schubert's German Dances are delightful miniatures, capturing the spirit of Viennese social dancing with their characteristic rhythms and charming melodies. They showcase Schubert's effortless lyricism and his gift for creating miniature masterpieces.
Emphasize rhythmic precision and the natural lilt of the waltz rhythm.
12 Viennese German Dances (D.128) is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 7.
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.
12 Viennese German Dances (D.128) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.