This is a variant or edition of the Ludtke work, serving as a contemplative study in sustained tone and harmonic balance. It is distinctive for its use of traditional diatonic harmony to create a sense of stillness.
The challenge lies in controlling the voicing of the chords to allow the melody to float above the accompaniment.
Comparable difficulty and character — good candidates for what to learn next.
Beatitudes 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 Beatitudes lasts about 3 minutes.
Beatitudes 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 Beatitudes by William G. Ludtke, "Who are We?" from Psalm 8 by William G. Ludtke, Prelude in C major by Johann Sebastian Bach — see the full similar-pieces list on this page.