This obscure work is an etude likely intended for technical development in the minor key. Its distinctiveness lies in its brief but intense dramatic shifts.
At Henle 5 this is a late-intermediate piece — technically substantial, with musical demands to match. The main demands: fast passage work that stays light and even at tempo; fine finger independence within the hand; and sharp dynamic and character contrasts held together in one arc.
The primary challenge is maintaining technical precision while navigating the rapid shifts in dynamic tension.
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.
Etude in G minor (Op.1 No.1) is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 5.
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.
A typical performance of Etude in G minor (Op.1 No.1) lasts about 3 minutes.
Etude in G minor (Op.1 No.1) 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 No.2 in A minor by JH., Passacaglia by George Frideric Handel, Fantasy in D minor by Wolfgang Amadeus Mozart — see the full similar-pieces list on this page.