Why repeated notes go dull or uneven
Fast repeated notes are one of those things that look simple on the page and come out muddy in the room. The same note, several times, and somehow it loses its edge — the repetitions blur together, or some speak and some don't, or the whole figure hardens into a tense little knot.
Almost always, the cause is the same: the note is being struck. Hit again, hit again, hit again. Striking the same key repeatedly is slow to recover and quick to tense, and at speed the key has no time to return before the next hit lands, so the sound thins out and the hand braces.
The fix is to stop striking the note and start grasping it. Repeated notes become clear and confident when the fingers do the work — not by striking, but by grasping and releasing.
Grasp and release — what the fingers actually do
Here is the action. Each note is played with a curved, concentrated finger that pulls slightly out of the key after contact — like a cat closing and opening its claws. The motion is short, precise, and alive. The finger does not press and stay; it engages the key and draws back, and that small backward pull is what keeps the sound clean and the hand free.
In fast repeated notes we usually change fingers on the same key — 4–3–2–1 — rather than hammering one finger over and over. This is the part that gives the figure its freedom, its articulation, and its control, especially in melodic passages: each repetition gets a fresh, ready finger instead of a tiring one.
The wrist stays free and supple, allowing a small, natural hand rotation every four notes. That rotation does not help the attack — it is not where the sound comes from. It keeps the hand mobile so nothing seizes up over a long passage.
This is what I call the cat technique, and the image is exact: a cat's claws touch and retract, they do not stamp. Concentrated, curved fingers that grasp and release do the same thing to a repeated note — they keep it crisp instead of letting it collapse into a dull, even pressure.
Why the curved, concentrated finger is the whole thing
It is worth being clear about why the finger shape carries this, because "curved fingers" on its own sounds like generic advice.
A concentrated finger is curved and structurally engaged — stable enough to give the key a clean, defined contact, free enough to pull back immediately afterward. A collapsed, soft finger cannot do either: it smears the contact and has nothing to pull back with, so the repetitions lose definition exactly when they need it most.
The grasp-and-release only exists if there is a concentrated finger to perform it. That is also why this shape is not special to repeated notes — it is the same gently open, curved umbrella hand that underlies clean finger work generally, applied here to one repeating key.
Try it: four repeated notes, fast finger change
Take a single key.
- Play four repeated notes on it with finger changes: 4–3–2–1. Then move to the next key and repeat.
- Start slowly and very exact in forte. The notes are detached — clearly separated, each one grasped and released.
- As the tempo increases, the key will no longer fully return between notes — that is expected. It needs to return only enough to produce a good sound on the next contact.
- Finish fast and light, in a piano leggiero — the same grasp-and-release action, now quick and feather-light rather than detached and strong.
Listen across the range. The test is whether the tone stays equal from the slow strong end to the fast light end. If repetitions start dropping out at speed, the finger has gone soft or the hand has stopped rotating freely — not that you need to hit harder.
Where this fits in accuracy work
Clear repeated notes are one accuracy sub-skill inside the broader accuracy and scale craft — the same family as even passagework and clean targeting, all of it built on the finger doing a defined, recoverable action rather than a tense one.
The finger-alternation at the root of the cat technique is also closely related to where trill speed comes from: a trill is alternation between two notes, repeated notes are alternation on one, and both stay fast and even for the same reason — fresh fingers, free hand, no striking.
And because evenness is exactly what tends to break first under speed, the metronome is the natural check here: it shows you the precise tempo at which the repetitions stop being equal, which is the spot to actually work on.
In short
Crisp repeated notes do not come from striking the key harder or faster. They come from curved, concentrated fingers that grasp and release — pulling slightly out of the key after contact — with finger changes on the one note and a free, supple wrist.
Striking tires and tenses. Grasping and releasing stays clean from slow forte to fast leggiero.
Where this is built step by step
You will find this trained directly in Super Fingers — Exercise 12, where the cat technique is built from slow, exact forte through to fast, light leggiero. Inside the Piano Fantasy Academy it is developed gradually, from that exercise into real repertoire, so the action becomes reliable instead of something that only works on a good day.
You can keep experimenting on your own, or follow a clear system that builds this finger action, step by step.
