This is a pedagogical teaching piece intended for early intermediate students. It is defined by its simple binary structure and reliance on standard harmonic patterns.
Focus on balancing the melody against the lighter accompaniment figures.
Comparable difficulty and character — good candidates for what to learn next.
At Sundown is rated Henle level 2 of 9 — beginner repertoire, roughly ABRSM grades 2–3. In the RCM system it corresponds to about level 2.
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 At Sundown lasts about 2 minutes.
At Sundown 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 Blaue Aeuglein by Friedrich Burgmüller, Albumblad by Oskar Merikanto, "Berceuse" by Alexandre Édouard Goria — see the full similar-pieces list on this page.