A set of variations on themes from Mozart's Don Giovanni, typical of the 19th-century operatic fantasy style. It is distinctive for its dramatic flair and integration of complex melodic lines into a solo piano texture.
The student needs to balance operatic drama with clear, precise articulation of the ornamentation.
Comparable difficulty and character — good candidates for what to learn next.
'Don Juan' de Mozart (Op.24) 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 'Don Juan' de Mozart (Op.24) lasts about 7 minutes.
'Don Juan' de Mozart (Op.24) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include 'L'elisire d'amore' de Donizetti by Jules Herman, 'La straniera' de Bellini by Jules Herman, Ballade by Conrad Ansorge — see the full similar-pieces list on this page.