Armstrong's variations utilize a consistent modal framework to create 12 distinct characters. It is an exploration of contemporary minimalism and thematic development.
Maintaining rhythmic steadiness while navigating the shifting modal patterns is vital.
Comparable difficulty and character — good candidates for what to learn next.
12 Variations in S-Mode is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
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 12 Variations in S-Mode lasts about 5 minutes.
12 Variations in S-Mode 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 12 Variations in S-Mode by Peter McKenzie Armstrong, 12 Variations in S-Mode, for piano solo by Peter McKenzie Armstrong, Black & White, for piano solo by Peter McKenzie Armstrong — see the full similar-pieces list on this page.