This interlude uses impressionistic-inspired harmony to depict a gradual sunrise. The texture is characterized by sparse, bell-like chords and long silences.
Mastering the control of the decay of sound is essential for capturing the piece's atmospheric intent.
Comparable difficulty and character — good candidates for what to learn next.
'Sunrise' Interlude, V.40 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 'Sunrise' Interlude, V.40 lasts about 3 minutes.
'Sunrise' Interlude, V.40 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, V.28 by Or Vaitzman, Berceuse, V.24 by Or Vaitzman, Gymnopédie No. 1 by Erik Satie — see the full similar-pieces list on this page.