This piece is a short liturgical-style piano work. Its distinctiveness arises from the use of simple, hymn-like phrasing adapted for an intimate performance setting.
At Henle 4 this is an intermediate piece that expects secure technique and real attention to phrasing. The main demands: a true singing tone, with the melody floating above the accompaniment; precise articulation — the difference between crisp and blurred is the piece; and chord voicing — bringing out one note inside a handful of others.
The technical demand is centered on producing a balanced, cantabile sound across all registers.
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.
Chorale Prelude is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 5.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 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 Chorale Prelude lasts about 3 minutes.
Chorale Prelude 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 Brandeis Piano Suite by Jason L. Pachman, Baroque Suite by Jason L. Pachman, Birthday Music for Piano by Jason L. Pachman — see the full similar-pieces list on this page.