Thalberg's fantasy on themes from Lucrezia Borgia is a masterpiece of the 'three-hand effect' technique, where melodies are projected in the middle register with surrounding arpeggios. It showcases the technical excess and grand romantic style of the mid-19th century virtuoso.
At Henle 8 this is concert repertoire: professional-level technique is the entry ticket. The main demands: a true singing tone, with the melody floating above the accompaniment; fast passage work that stays light and even at tempo; and sweeping arpeggio figures that must stay smooth across positions.
Beyond that, expect big chords that need weight without harshness, and chord voicing — bringing out one note inside a handful of others.
At roughly 10 minutes, stamina and memory become part of the challenge — plan practice in sections.
The student must develop precise thumb control to project the melodic line buried within dense, sprawling arpeggiated textures.
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.
Lesser-known works by the same hand, at a comparable level.
Fantaisie sur 'Lucrezia Borgia' (Op.50) 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 Fantaisie sur 'Lucrezia Borgia' (Op.50) lasts about 10 minutes.
Fantaisie sur 'Lucrezia Borgia' (Op.50) 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 Fantaisie sur 'La fille du régiment' by Sigismond Thalberg, Fantaisie sur des thèmes de 'Moïse' by Sigismond Thalberg, Divertissement by Sigismond Thalberg — see the full similar-pieces list on this page.