Charles-Valentin Alkan's 'Alleluia' is a remarkably demanding and virtuosic piece, often seen as a standalone movement akin to a toccata. It showcases Alkan's characteristic brilliance and technical challenges with its rapid figurations and powerful octaves.
Requires exceptional finger strength, stamina, and precise control for the relentless torrent of notes and massive chords.
Alleluia is rated Henle level 7 of 9 — late advanced repertoire, roughly ABRSM grade 8 and above. In the RCM system it corresponds to about level 9.
You should be comfortable at Henle level 7 — meaning you can already play level 6–7 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 Alleluia lasts about 4 minutes.
Alleluia is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.