This piece by Massa is a late-Romantic character piece that reflects the salon music tradition of Argentina. Its melodic contour is highly lyrical and relies on sustained emotional expression.
Students must focus on balancing the singing melody against a delicate, flowing accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
Camino de plata 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 Camino de plata lasts about 3 minutes.
Camino de plata 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 Pavane pour une infante défunte by Maurice Ravel, Waltz in C-sharp minor, No. 2 by Frédéric Chopin, Waltz in A minor by Frédéric Chopin — see the full similar-pieces list on this page.