This is the standard piano arrangement of Ezra Jenkinson's popular concert piece. It demands a light touch to capture the whimsical character suggested by the title.
At Henle 4 this is an intermediate piece that expects secure technique and real attention to phrasing. The main demands: fast passage work that stays light and even at tempo; precise articulation — the difference between crisp and blurred is the piece; and fine finger independence within the hand.
Beyond that, expect sweeping arpeggio figures that must stay smooth across positions.
Develop sufficient finger agility to execute the rapid shifts and string-crossing imitations.
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.
Elfentanz is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 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 Elfentanz lasts about 3 minutes.
Elfentanz 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 Alexander's Ragtime Band by Irving Berlin, Black and White Rag by George Botsford, Bella Bocca by Emile Waldteufel — see the full similar-pieces list on this page.