These etudes by Alexander Glazunov are substantial pieces that challenge pianistic technique while offering rich musical content. They are characterized by their virtuosic demands and expressive qualities.
Develop stamina and precision in fast, arpeggiated passages.
3 Études pour le piano is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
3 Études pour le piano is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.