This canon highlights Bach's ability to create complex harmonic structures from simple, repetitive thematic material. The musical distinction lies in the tight, logical development of the subject.
Coordinate the entry of the voices to ensure the subject is always clearly projected.
Canon in D major (BWV 1075) is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 7.
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 Canon in D major (BWV 1075) lasts about 2 minutes.
Canon in D major (BWV 1075) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.