Mozart's '19 Sonatas for the Piano' represent a significant body of work in the Classical sonata form, showcasing his mastery of melodic grace, harmonic clarity, and structural elegance. They range from simpler pieces to more complex and virtuosic compositions.
Achieving crystalline articulation, elegant phrasing, and balanced voicing are paramount in navigating Mozart's sophisticated textures.
19 Sonatas for the Piano is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 7.
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.
19 Sonatas for the Piano is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.