This is a contemporary concert arrangement of a lighter character piece. It is distinctive for its modern harmonic inflections applied to a more traditional melodic base.
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; rubato that must breathe naturally without losing the pulse; and several simultaneous layers, each needing its own dynamic level.
The primary challenge lies in maintaining a consistent cantabile tone throughout the dense, modern harmonic voicings.
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.
Concert Paraphrase on 'Novelletten No.4' is rated Henle level 8 of 9 — concert repertoire, roughly diploma level. In the RCM system it corresponds to about level 8.
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 Concert Paraphrase on 'Novelletten No.4' lasts about 4 minutes.
Concert Paraphrase on 'Novelletten No.4' 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 Ballade No.3 by Frédéric Chopin, Ballade No.3 by Frédéric Chopin, 2 Airs russes variés by Sigismond Thalberg — see the full similar-pieces list on this page.