Schubert's "18 Waltzes" are a charming collection of shorter pieces showcasing his lyrical gift and mastery of song-like melodies within the waltz form.
Emphasize nuanced dynamic shaping and the characteristic lilt of the waltz rhythm.
18 Waltzes (Op.9a) 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.
A typical performance of 18 Waltzes (Op.9a) lasts about 30 minutes.
18 Waltzes (Op.9a) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.