Five pure vowels on one pitch

Why this matters

Per Estill vowel-shaping, the five cardinal vowels (i e a o u) anchor every Western melody. If your tone color shifts when you switch vowels, your pitch will drift with it — vowels are the substrate every other singing skill stands on.

What you should be able to do

V-A: vowel stable on one pitch (classifier confidence ≥ 0.75 or learner-baseline F1/F2 band) on 4/5 reps each.

Estimated focus time: 1h

How to practice this with your voice today

1. Drone middle C on a piano or pitch app and let it ring while you work.
2. Speak each vowel slowly into the drone: 'ee, eh, ah, oh, oo' — about 2 seconds each.
3. Match your sung pitch to the drone, not your speaking pitch — the vowels should sit on the same note.
4. Aim for the same loudness and clarity across all five — no vowel should dominate or thin out.
5. Repeat the cycle 5 times, then drop the drone and listen for whether your sung pitch held steady.