Frederic Rzewski’s 'Demons' is a complex, virtuosic work that juxtaposes avant-garde techniques with intense, rhapsodic outbursts. It is highly idiomatic to Rzewski's style, demanding extreme control of timing and raw expressive power.
At Henle 8 this is concert repertoire: professional-level technique is the entry ticket. The main demands: polyrhythms that have to lock together without sounding mechanical; big chords that need weight without harshness; and wide stretches that reward larger hands and clever redistribution.
Beyond that, expect sharp dynamic and character contrasts held together in one arc, and fast passage work that stays light and even at tempo.
At roughly 8 minutes, stamina and memory become part of the challenge — plan practice in sections.
The primary challenge is the execution of highly dense, asymmetrical rhythmic clusters and rapid shifts in touch.
Comparable difficulty and character — good candidates for what to learn next.
A level or two down with the same spirit — ideal if this piece is still out of reach.
Where this piece's skills lead: slightly harder works making similar technical demands.
Lesser-known works by the same hand, at a comparable level.
Demons is rated Henle level 8 of 9 — concert repertoire, roughly diploma level. In the RCM system it corresponds to about level 10.
You should be comfortable at Henle level 8 — meaning you can already play level 7–8 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 Demons lasts about 8 minutes.
Demons 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 De Profundis by Frederic Rzewski, Ballade No. 5 (It Makes a Long Time Man Feel Bad) by Frederic Rzewski, Cadenza con o senza Beethoven by Frederic Rzewski — see the full similar-pieces list on this page.