Raymond Moulaert's Andante reflects the harmonic colors and contemplative nature of early 20th-century Belgian music. It uses rich textures to create a highly atmospheric effect.
Carefully manage the pedaling to sustain the layered harmonic textures without muddying the sound.
Comparable difficulty and character — good candidates for what to learn next.
Andante is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 7.
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 Andante lasts about 3 minutes.
Andante 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 Gymnopédie No. 1 by Erik Satie, Autumn Song by Cyril Scott, 'Mondnacht' by Konstantin Joachim Gaul — see the full similar-pieces list on this page.