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Unit 4 · From warm-up to song

Trill into a line

Trill a short line, then sing the same line on "ah", as easy as the trill, so the warm-up carries straight into singing. A free lesson, in short steps.

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What it teaches

What you sing

  1. A line on a trill, heard then sung. Can't trill yet? Hum or slide on "oo" instead: the app follows whatever easy sound you make.
  2. The same line on "ah".
  3. Sing it on "ah" once more and listen 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.
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