Thorvald Otterström's work is a dense contrapuntal exploration blending late Romantic harmony with Baroque structures. It stands out for its rigorous intellectual architecture and complex fugal development.
Master the independence of voices to balance the intricate contrapuntal lines.
Comparable difficulty and character — good candidates for what to learn next.
Canon, Choral und Fuge is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 9.
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 Canon, Choral und Fuge lasts about 6 minutes.
Canon, Choral und Fuge 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 Chromatic Fantasia and Fugue in D minor by Johann Sebastian Bach, Partita No. 2 in C minor by Johann Sebastian Bach, Basso Ostinato, VL 267 by Mikalojus Konstantinas Čiurlionis — see the full similar-pieces list on this page.