This is Charles-Valentin Alkan's transcription of the first movement of Beethoven's Piano Concerto No. 3 in C minor, Op. 37, for solo piano. It is musically distinctive for Alkan's characteristic virtuosic elaboration and dense textures, demanding immense technical facility.
Demands immense stamina, rapid octaves, and powerful chordal passages throughout.
Beethoven's Piano Concerto No.3-1st Mvt., Transciption 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 Beethoven's Piano Concerto No.3-1st Mvt., Transciption lasts about 12 minutes.
Beethoven's Piano Concerto No.3-1st Mvt., Transciption is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.