Exposición de Sonata is a structural exercise mimicking traditional sonata form conventions. It serves as a study in thematic development and contrast.
At Henle 4 this is an intermediate piece that expects secure technique and real attention to phrasing. The main demands: Alberti-bass accompaniment kept quiet and even under the melody; precise articulation — the difference between crisp and blurred is the piece; and sharp dynamic and character contrasts held together in one arc.
The primary challenge is managing the transitions between thematic sections while maintaining a cohesive tempo.
Comparable difficulty and character — good candidates for what to learn next.
A level or two down with the same spirit — ideal if this piece is still out of reach.
Where this piece's skills lead: slightly harder works making similar technical demands.
Exposición de Sonata 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 Exposición de Sonata lasts about 4 minutes.
Exposición de Sonata 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 Blue Tango by Leroy Anderson, Allegro in A major by Carl Philipp Emanuel Bach, Fantaisie, OL 67 by Louis Couperin — see the full similar-pieces list on this page.