Wendelin Bitzan's work is a cerebral exploration of minimalist textures and contrapuntal movement. It focuses on the subtle interplay of voices within a restricted harmonic palette.
The player must maintain absolute clarity in the independent voices throughout the shifting textures.
Comparable difficulty and character — good candidates for what to learn next.
Begebenheit, EV 60 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 Begebenheit, EV 60 lasts about 4 minutes.
Begebenheit, EV 60 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 'Werde munter, mein Gemüte' by Johann Sebastian Bach, Bourrée h-Moll by Wilhelm Friedemann Bach, 1. Ricercar Primo (con due Soghetti) by Ascanio Mayone — see the full similar-pieces list on this page.