Boracca is an obscure work that explores harmonic color through a somewhat Impressionistic lens. Its musical language is distinguished by its subtle shifts in tone and texture.
The challenge is to manage pedaling to maintain clarity during harmonic transitions.
Comparable difficulty and character — good candidates for what to learn next.
Boracca is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 4.
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 Boracca lasts about 4 minutes.
Boracca 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 'Abegg' Variations Op.1 by Robert Schumann, At Twilight by Percy Grainger, Berceuse by Germaine Tailleferre — see the full similar-pieces list on this page.