This C major sonata is quintessentially bright and virtuosic, showcasing Scarlatti's wit through sudden dynamic shifts and energetic patterns. It is musically distinctive for its sharp, dance-like rhythms and brilliant scalar flourishes.
Achieving precise articulation in the fast, leaping passages is the primary technical obstacle.
Comparable difficulty and character — good candidates for what to learn next.
Keyboard Sonata in C major (K. 159) is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 8.
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.
A typical performance of Keyboard Sonata in C major (K. 159) lasts about 3 minutes.
Keyboard Sonata in C major (K. 159) 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 Keyboard Sonata in E major by Domenico Scarlatti, Keyboard Sonata in D minor by Domenico Scarlatti, Keyboard Sonata in B minor by Domenico Scarlatti — see the full similar-pieces list on this page.