Op. 39 increases the technical demands of the Fiedorowicz cycle with rapid figuration. It relies on repetitive patterns that require sustained mental concentration.
At Henle 4 this is an intermediate piece that expects secure technique and real attention to phrasing. The main demands: fast passage work that stays light and even at tempo; fine finger independence within the hand; and precise articulation — the difference between crisp and blurred is the piece.
Work on hand relaxation to avoid tension during the faster running passages.
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.
Electronic Work (Op.39) is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 4.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 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 Electronic Work (Op.39) lasts about 3 minutes.
Electronic Work (Op.39) 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 Electronic Work by Natan Fiedorowicz, Elegy by Natan Fiedorowicz, Electronic Work by Natan Fiedorowicz — see the full similar-pieces list on this page.