Is your hand ready

Vibrato is the first thing in this course that has a real readiness gate — not a gate that locks anything (nothing here does — RULES.md #4), but an honest checklist. Vibrato built on a hand that isn't ready doesn't add expression; it just wobbles whatever was wrong underneath. This lesson is four things to check before you start Movement B.

1 · You play in tune in first position, without tension

Vibrato moves the finger around a pitch. If the pitch itself is a guess, the wobble has no centre to return to — you get a note that's vaguely sour and shaky. Test it:

60 bpm

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2 · Your left hand is relaxed

Specifically: the thumb is not clenched against the neck, and the wrist is not collapsed inward (it should be roughly straight, or gently arched away from the neck — never folded in so the wrist bone touches the violin). A clenched thumb or a collapsed wrist physically cannot vibrate — the motion needs a free, springy hand. If yours grips, that's the thing to fix first (back to Stage 0's the-left-hand-frame).

3 · You can hold the violin without your left hand

The plain test: play a note, then take your left hand right off the neck. The violin should stay level, held between your collarbone and jaw. If it drops, your hold is still leaning on the left hand — and a hand that's propping up the instrument can't also be rocking freely. Fix the hold before the vibrato.

4 · You've started shifting

You don't need 3rd position to be polished, but the hand should already know how to travel the neck loosely — which is exactly what Stage 6 built. A hand that can shift is a hand that's given up gripping. This is why vibrato comes now and not in Stage 2.

Check yourself

The usual mistake

Rushing past this because vibrato is the exciting one. A year of playing with a shaky, tense-handed vibrato is much harder to undo than a few more weeks of plain, in-tune, relaxed first position. If two or three of these aren't solid yet, that's your practice list — and it's a short one.