A didactic etude specifically focused on strengthening the fourth finger. It uses repetitive patterns to build stamina and independence while maintaining a steady pulse.
At Henle 4 this is an intermediate piece that expects secure technique and real attention to phrasing. The main demands: fine finger independence within the hand; precise articulation — the difference between crisp and blurred is the piece; and continuous sixteenth-note figuration that must ripple, not chatter.
Avoid excessive tension in the hand when focusing the work on the fourth finger.
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 for 4th Finger is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
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 Etude for 4th Finger lasts about 2 minutes.
Etude for 4th Finger 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 13 Variations on 'Es war einmal ein alter Mann' by Ludwig van Beethoven, Dulce et utile by Johann Baptist Cramer, Diatonic Study by Cyril Scott — see the full similar-pieces list on this page.