This "Allegretto con variazioni" by Johann Christoph Friedrich Bach offers a well-crafted exploration of a musical theme through a series of distinct variations. It is characteristic of the Classical period's emphasis on balance and clarity, showcasing melodic invention within a structured framework.
Develop evenness of touch and precise articulation to highlight the melodic contours of the theme and its variations.
Allegretto con variazioni is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
Allegretto con variazioni is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.