Adam Karasiński was a prolific composer of dance music, and 'Extase de Valse' is a quintessential example of Polish salon dance literature. It features bright virtuosic passage work embedded within a traditional waltz framework.
At Henle 4 this is an intermediate piece that expects secure technique and real attention to phrasing. The main demands: a waltz lilt that needs charm and a flexible left hand; fast passage work that stays light and even at tempo; and sweeping arpeggio figures that must stay smooth across positions.
Beyond that, expect precise articulation — the difference between crisp and blurred is the piece.
The technical challenge lies in the rapid passage work and light articulation required to keep the waltz feeling airy.
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.
Extase de Valse 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 Extase de Valse lasts about 4 minutes.
Extase de Valse 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 Eliseum Walc by Adam Józef Karasiński, 'S Wonderful by George Gershwin, Elite-Club by Ernesto Nazareth — see the full similar-pieces list on this page.