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Unit 3 · Resonant humming

Hum to open

Open your hum so "m" becomes "ma": "mm" opens into "ah" on one note, then on three notes going up, then a longer line hummed all the way. A free lesson.

Free in the app: sing one lesson of each course with no account; a free account opens the course unit by unit.

More in Resonant humming

Hum to open

What you sing

  1. "Mm" opening into "ah" on one note, heard then sung.
  2. Now on three notes going up.

Challenge: Hum a line

A longer hummed line. Keep the buzz all the way through.

Lips together. Teeth apart

Easy. Never forced; stop if anything tightens or hurts

What you sing

  1. Hear it, then hum it back.

Singing safely

Keep every sound quiet to medium and easy, never forced, and stop if anything tightens, tickles or hurts. Can't trill yet? A hum or an "oo" does the same job here.

Free tools by Stackapella

All of these are free, and so is every course.

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.

More free tools

No account, no ads. Each one keeps working offline once you've opened it.

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