This contemporary arrangement explores the anthem in different modal colors, creating a nuanced harmonic landscape. It is distinctive for its departure from traditional diatonic harmony in favor of shifting modal centers.
The challenge is managing smooth transitions between the different modes while maintaining tonal color.
Comparable difficulty and character — good candidates for what to learn next.
'America' in 4 Modes is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 5.
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 'America' in 4 Modes lasts about 3 minutes.
'America' in 4 Modes 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 'America' in Four Modes by Anthony St. Pierre, 'Picardy' — a choral coda by Anthony St. Pierre, Brigg Fair by Percy Grainger — see the full similar-pieces list on this page.