Józef Wieniawski was a highly skilled pianist whose etudes are heavily influenced by the virtuosic traditions of Liszt and Chopin. Op. 33 No. 1 is a bold, storm-like piece that demands considerable stamina and technical facility.
At Henle 7 this is a late-advanced work — the technical demands are serious and sustained. The main demands: fast passage work that stays light and even at tempo; sharp dynamic and character contrasts held together in one arc; and big chords that need weight without harshness.
Beyond that, expect octave passages that demand a relaxed wrist to avoid tension.
Developing the physical endurance required for the relentless octaves and chordal textures is essential.
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.
Etude de concert No 1. (Op.33) 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 Etude de concert No 1. (Op.33) lasts about 6 minutes.
Etude de concert No 1. (Op.33) 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 Etude de concert by Józef Wieniawski, Etude de concert No. 2 by Józef Wieniawski, Ballade by Józef Wieniawski — see the full similar-pieces list on this page.