Rafael Tuegols is a key figure in early Argentine music, and this piece embodies the early rhythmic stylings that eventually evolved into tango. It is characterized by its dramatic shifts and tight rhythmic syncopation.
At Henle 4 this is an intermediate piece that expects secure technique and real attention to phrasing. The main demands: rubato that must breathe naturally without losing the pulse; precise articulation — the difference between crisp and blurred is the piece; and a left hand with real melodic or rhythmic responsibility of its own.
Mastering the rhythmic pulse while incorporating subtle rubato is essential for the stylistic integrity of this piece.
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.
El zorro gris 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 El zorro gris lasts about 3 minutes.
El zorro gris 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 Gymnopédie No. 1 by Erik Satie, Body and Soul by Johnny Green, Waltz in C-sharp minor, No. 2 by Frédéric Chopin — see the full similar-pieces list on this page.