This piece by Rudolf Förster seeks to capture the magical, dreamlike quality implied by its title through chromatic harmonies and shimmering arpeggiation. It demands significant control over tonal color to fully realize its atmospheric potential.
At Henle 4 this is an intermediate piece that expects secure technique and real attention to phrasing. The main demands: careful pedaling — clarity depends on the foot as much as the fingers; sweeping arpeggio figures that must stay smooth across positions; and a true singing tone, with the melody floating above the accompaniment.
Beyond that, expect chord voicing — bringing out one note inside a handful of others, and wide stretches that reward larger hands and clever redistribution.
Coordinate the wide-span left-hand arpeggios with the delicate, atmospheric right-hand 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.
Ein Sommernachtstraum (Op.517) 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 Ein Sommernachtstraum (Op.517) lasts about 5 minutes.
Ein Sommernachtstraum (Op.517) 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 Caledonian Market by Poldowski, Bacchus by Victor Alphonse Duvernoy, Cortège exotique by Werner R. Heymann — see the full similar-pieces list on this page.