Wolfgang Amadeus Mozart's "36 Cadenzas" K.624 are virtuosic improvisations written for his piano concertos, designed to showcase both the soloist's and the composer's skill. They feature brilliant passagework, harmonic exploration, and often dramatic flair.
These cadenzas demand exceptional finger dexterity, rhythmic precision, and a strong sense of improvisational freedom.
36 Cadenzas (K.624) is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 9.
You should be comfortable at Henle level 6 — meaning you can already play level 5–6 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
36 Cadenzas (K.624) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.