This set of variations on the British national anthem demonstrates the widespread popularity of national melodies in the late 18th-century salon repertoire. It is a quintessential display of Classical period decorative variation, prioritizing melody and accessibility.
Focus on the smooth transition between the variations while maintaining a consistent and respectful tone for the familiar melody.
Comparable difficulty and character — good candidates for what to learn next.
12 Variations on 'God Save the King' is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 5.
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 12 Variations on 'God Save the King' lasts about 5 minutes.
12 Variations on 'God Save the King' 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 10 Variations in C major by Christoph Friedrich Beck, Bénédiction by Louis James Alfred Lefébure-Wély, Amarante by Edouard Silas — see the full similar-pieces list on this page.