Frank Frysinger’s composition is an accessible instructional piece written in an accessible late-Romantic style. It is designed to develop a student's ability to play soft, sustained melodies.
Focus on consistent tone production and soft, delicate touches across the keyboard.
Comparable difficulty and character — good candidates for what to learn next.
At twilight 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 At twilight lasts about 3 minutes.
At twilight 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 in A-flat major by Frank Frysinger, Andantino in C major by Franz Schubert, 'Sleep! Baby, sleep!' by Alfred Humphries Pease — see the full similar-pieces list on this page.