Kalkbrenner's work reflects the refined, early Romantic style common in the Parisian salons of the 1830s. It features elegant variations on a popular melody, emphasizing delicate touch and graceful passage work.
At Henle 7 this is a late-advanced work — the technical demands are serious and sustained. The main demands: ornaments that need to sound effortless, not squeezed in; a true singing tone, with the melody floating above the accompaniment; and rubato that must breathe naturally without losing the pulse.
Beyond that, expect continuous sixteenth-note figuration that must ripple, not chatter.
Achieving clarity and evenness in the rapid scale passages while maintaining a singing tone is the main technical hurdle.
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 on a Romance of Rousseau (Op.22) is rated Henle level 7 of 9 — late advanced repertoire, roughly ABRSM grade 8 and above.
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 Fantaisie on a Romance of Rousseau (Op.22) lasts about 7 minutes.
Fantaisie on a Romance of Rousseau (Op.22) 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 Fantasia and Variations on 'My lodging is on the cold ground' by Friedrich Wilhelm Kalkbrenner, Fantaisie No.10 sur un air irlandais op.50 by Friedrich Wilhelm Kalkbrenner, Fantaisie pour le Piano sur le célèbre air Auld Robin Gray by Friedrich Wilhelm Kalkbrenner — see the full similar-pieces list on this page.