This virtuoso concert piece showcases Saint-Saëns' command of mid-Romantic keyboard idiom. It is distinguished by its symphonic textures and rigorous technical demands requiring endurance and precision.
Focus on maintaining evenness in the rapid, sweeping arpeggio passages and powerful octave execution.
Comparable difficulty and character — good candidates for what to learn next.
Allegro de concert 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 concert lasts about 10 minutes.
Allegro de concert 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 Wanderer Fantasy in C major by Franz Schubert, Belfagor by Ottorino Respighi, Rhapsodie espagnole by Franz Liszt — see the full similar-pieces list on this page.