Cathect is a modern work that focuses on the development of motivic material within a concise structural framework. It is marked by its analytical approach to sonority and piano texture.
Achieving clarity in the inner voices is essential to highlighting the harmonic structure.
Comparable difficulty and character — good candidates for what to learn next.
Cathect is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
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 Cathect lasts about 3 minutes.
Cathect 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, Gnossienne No. 1 by Erik Satie, Ave Maria (Die Glocken von Rom) by Franz Liszt — see the full similar-pieces list on this page.