This charming waltz likely embodies the graceful and sentimental style associated with Viennese salon music. It's characterized by its flowing melodies and dance-like rhythms.
Develop a singing tone and nuanced phrasing, paying close attention to the rhythmic feel of the waltz.
Ballsirenen (Op.160) is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 6.
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 Ballsirenen (Op.160) lasts about 4 minutes.
Ballsirenen (Op.160) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.