Johann Baptist Jerg's opus 7 is a darker, more brooding work that breaks from standard salon tropes of the era. It utilizes larger harmonic structures and contrasting dynamics to create a sense of unease.
Focus on the execution of wide-span chords and the dramatic shifts in voicing.
Comparable difficulty and character — good candidates for what to learn next.
's Corpus delicti op. 7 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 's Corpus delicti op. 7 lasts about 4 minutes.
's Corpus delicti op. 7 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 Bal Masqué by Kees Schoonenbeek, Basso Ostinato, VL 267 by Mikalojus Konstantinas Čiurlionis, 'Fantasia' voor mannenkoor by Jef Tinel — see the full similar-pieces list on this page.