1 (2016) by Aryan Omid is an atmospheric contemporary work focusing on resonance and timbre manipulation. It is highly distinctive for its sparse texture and heavy reliance on atmospheric pedal techniques.
Achieving precise dynamic control and sustain to create the desired sonic color is the primary technical obstacle.
Comparable difficulty and character — good candidates for what to learn next.
1 (2016) is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 8.
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 1 (2016) lasts about 5 minutes.
1 (2016) 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 La cathédrale engloutie by Claude Debussy, Canope by Claude Debussy, Berceuse élégiaque, BV 252a by Ferruccio Busoni — see the full similar-pieces list on this page.