This appears to be a version of the previously listed work, demonstrating the composer's preference for fiery, modern technical demands. The musical language is characterized by bold gestures and rhythmic irregularity.
At Henle 6 this is an advanced piece that assumes fluent technique and rewards mature interpretation. The main demands: sharp dynamic and character contrasts held together in one arc; fast passage work that stays light and even at tempo; and wide stretches that reward larger hands and clever redistribution.
Beyond that, expect big chords that need weight without harshness.
Coordinating complex, overlapping rhythmic structures across the keyboard is the primary challenge.
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.
Ciel brûlant is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 8.
You should be comfortable at Henle level 6 — meaning you can already play level 5–6 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 Ciel brûlant lasts about 5 minutes.
Ciel brûlant 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 Ciel brûlant by Jean-François Marcoux, Caesura vasta by Jean-François Marcoux, CORPUS MUTANS by Jean-François Marcoux — see the full similar-pieces list on this page.