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Unit 1 · Oohs and aahs

Moving with the chords

Move your pad only when you must: keep the note the new chord shares, else step to the nearest one, and learn why an "oo" blends better. Free to sing.

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What it teaches

Keep the note the new chord shares; else step to the nearest. Mi, fa, mi, re.

Move only when you must. A common tone holds; else the nearest step

Why "oo". An "oo" blends where an "ah" carries; stop if anything tightens or hurts

Headphones on. Through a speaker, the lead and your earlier takes rest while you sing

What you sing

  1. Hear the chord move under each pad, then choose.
  2. The first two lines over the chords: mi, fa, mi, then re, each held on "oo".
  3. The whole chorus under the tune. Only the chord changes light: between them, hold by ear.
  4. Your pad once more, the guide singing it with you, then hear yours beside it.
Try one round

Singing safely

Headphones on. An easy volume, the middle of your voice, always softer than the lead; bops and doo-wahs sung lightly, never punched. Stop if anything tightens or hurts.

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Stackapella teaches you to sing harmony one part at a time, right in your browser.

Stackapella recording the alto part of Amazing Grace: each note is a bar with its name, and the one being sung says A little low, go up. Stackapella recording the alto part of Amazing Grace: each note is a bar with its name, and the one being sung says A little low, go up. Stackapella recording the alto part of Amazing Grace: each note is a bar with its name, and the one being sung says A little low, go up. Stackapella recording the alto part of Amazing Grace: each note is a bar with its name, and the one being sung says A little low, go up.
  • A guide sings your partHear your line over the others, slow it down, then take your turn.
  • Your notes light upEach note shows where you landed, and a hint when to go up or down.
  • Record every part yourselfStack your takes in time until you're the whole choir.
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