Clakos es Infernal is an aggressive, high-energy work that pushes the technical limits of the performer. It is characterized by its virtuosic speed and intense, percussive use of the keyboard.
Mastery of rapid, sustained octave-runs is required to convey the piece's intense, infernal energy.
Comparable difficulty and character — good candidates for what to learn next.
CLAKOS ES INFERNAL is rated Henle level 7 of 9 — late advanced repertoire, roughly ABRSM grade 8 and above. In the RCM system it corresponds to about level 10.
You should be comfortable at Henle level 7 — meaning you can already play level 6–7 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 CLAKOS ES INFERNAL lasts about 6 minutes.
CLAKOS ES INFERNAL 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 Caesura vasta by Jean-François Marcoux, Cadres inauditi by Jean-François Marcoux, CORPUS ELECTRICUM by Jean-François Marcoux — see the full similar-pieces list on this page.