Halfdan Kjerulf was a Norwegian composer whose piano music reflects the influence of the Nordic romantic tradition. This piece is a delicate lullaby featuring soft harmonic shifts.
Focus on achieving a seamless legato in the melody while keeping the accompaniment subtle and soft.
Comparable difficulty and character — good candidates for what to learn next.
Berceuse (Op.12) is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 4.
You should be comfortable at Henle level 3 — meaning you can already play level 2–3 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 Berceuse (Op.12) lasts about 2.5 minutes.
Berceuse (Op.12) 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 Berceuse by Halfdan Kjerulf, Brudefærden i Hardanger, HK 38 by Halfdan Kjerulf, Für Elise by Ludwig van Beethoven — see the full similar-pieces list on this page.