Jacques-Louis Battmann was a prolific composer of accessible organ and piano works. This piece mimics the nocturne form, emphasizing a gentle, lullaby-like melody.
At Henle 2 this is a beginner-level piece, where steady coordination between the hands is the main hurdle. The main demands: a true singing tone, with the melody floating above the accompaniment; careful pedaling — clarity depends on the foot as much as the fingers; and a left hand with real melodic or rhythmic responsibility of its own.
Balance the flowing arpeggiated left hand against the vocal-style melody.
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.
Lesser-known works by the same hand, at a comparable level.
Dans le sommeil is rated Henle level 2 of 9 — beginner repertoire, roughly ABRSM grades 2–3. In the RCM system it corresponds to about level 3.
You should be comfortable at Henle level 2 — meaning you can already play level 1–2 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 Dans le sommeil lasts about 3 minutes.
Dans le sommeil 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 Brises du lac by Jacques-Louis Battmann, Basquaise by Jacques-Louis Battmann, Brises d'Italie by Jacques-Louis Battmann — see the full similar-pieces list on this page.