This piece is the piano version of Liszt's choral work, setting the poem by Saint Francis of Assisi. It is distinguished by its profound spiritual tone and wide-ranging arpeggiated textures.
The performer must navigate the complex voicing of the rolling chords to ensure the melody remains dominant.
Comparable difficulty and character — good candidates for what to learn next.
Cantico del sol di Francesco d'Assisi (S.4) is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 10.
You should be comfortable at Henle level 6 — meaning you can already play level 5–6 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 Cantico del sol di Francesco d'Assisi (S.4) lasts about 10 minutes.
Cantico del sol di Francesco d'Assisi (S.4) 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 Ave Maria after Schubert S558 by Franz Liszt, Ave Maria (Die Glocken von Rom) by Franz Liszt, Ave Maria (The Bells of Rome) by Franz Liszt — see the full similar-pieces list on this page.