Franz Schubert's 'Aus Diego Manazares (Ilmerine)' D.458 is a spirited and virtuosic piano work, likely a dance with Spanish inflections. It is known for its quick tempo, bright character, and demanding passagework.
Focus on precise staccato articulation and evenness of tone throughout the rapid sixteenth-note passages.
Aus Diego Manazares (Ilmerine) (D.458) is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
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 Aus Diego Manazares (Ilmerine) (D.458) lasts about 4 minutes.
Aus Diego Manazares (Ilmerine) (D.458) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.