This piece is a variant study by Whitney focusing on contrapuntal discipline at the octave. It is distinct for its educational clarity and its ability to illustrate clear, imitative structures.
Ensure both voices are played with the same nuance and dynamic intensity.
Canon in Octave is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 4.
You should be comfortable at Henle level 3 — meaning you can already play level 2–3 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 Octave lasts about 2 minutes.
Canon in Octave is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.