Cramer's variations on 'Crazy Jane' are characterized by lively rhythmic interplay and agile passagework. The set demands considerable dexterity and precise articulation from the performer.
Focus on developing evenness and speed in the sixteenth-note runs and articulate scalar passages clearly.
8 Variations on 'Crazy Jane', M.6.04 is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 3.
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 8 Variations on 'Crazy Jane', M.6.04 lasts about 5 minutes.
8 Variations on 'Crazy Jane', M.6.04 is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.