This is likely a variant or misattributed version of Alfred Warren's nocturne. It maintains the characteristically intimate and unassuming melodic writing of light parlor music.
At Henle 3 this is a late-beginner piece — comfortable hands-together playing is assumed, and musical shaping starts to matter. 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 rubato that must breathe naturally without losing the pulse.
Maintain consistent tempo and phrasing through the lyrical sections.
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.
Evening Thoughts Nocturne 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 Evening Thoughts Nocturne lasts about 3 minutes.
Evening Thoughts Nocturne 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 Bijou Polka by Alfred E. Warren, Electric Polka by Alfred E. Warren, Evening Melody by Cyril Scott — see the full similar-pieces list on this page.