A sophisticated work by the Finnish composer Uuno Klami that updates the traditional Barcarolle form with Modernist harmonic sensibilities. It is distinctive for its use of modal colors and fluid, restless rhythmic motion.
Mastering the control of tone color and atmospheric pedaling is essential for this work.
Comparable difficulty and character — good candidates for what to learn next.
Barcarole (Op.5) is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 9.
You should be comfortable at Henle level 6 — meaning you can already play level 5–6 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 Barcarole (Op.5) lasts about 5 minutes.
Barcarole (Op.5) 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 Asturias (Leyenda) by Isaac Albéniz, Berceuse élégiaque, BV 252a by Ferruccio Busoni, "Esquisses hebraiques" by Alexander Abramovich Krein — see the full similar-pieces list on this page.