A cornerstone of the Spanish piano repertoire, this work demonstrates an intense, quasi-orchestral power. It is uniquely characterized by its dark, brooding opening and a thunderous, technically demanding middle section.
The primary challenge is managing the stamina and tension required for the massive chordal and octave passages.
Comparable difficulty and character — good candidates for what to learn next.
Allegro de Concierto (Op.46) is rated Henle level 8 of 9 — concert repertoire, roughly diploma level. In the RCM system it corresponds to about level 10.
You should be comfortable at Henle level 8 — meaning you can already play level 7–8 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 Allegro de Concierto (Op.46) lasts about 9 minutes.
Allegro de Concierto (Op.46) 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 Bourrée fantasque by Emmanuel Chabrier, Rhapsodie espagnole by Franz Liszt, Allegro de concert by Frédéric Chopin — see the full similar-pieces list on this page.