Stackapella Open the app

Unit 1 · Find the flip

Flip or slide?

Hear how a yodel jumps straight from one note to the other while a slide passes through every note between, then pick which is which by ear. Free and short.

Sing this 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 Find the flip

Flip or slide?

A yodel flips: the voice jumps straight from one note to the other. A slide passes through every note in between. Your ear can learn the difference.

The flip. Straight across: a light flick

The slide. A siren between the notes

Listen as often as you like. Only your first answer counts

What you sing

  1. Listen to both, then choose.
Try one round

Challenge: The hook in time

Four hooks in rhythm. First slowly, with a gap after each; then four in a row.

Warm up first. A lip trill or a quiet siren, up and down

A light flick. Let the top tip over, never a hard catch

Land lightly. Back down at speaking volume

What you sing

  1. Two hooks at your own pace first.
  2. Listen, then sing two hooks back, a gap after each.
  3. Now four, in time over the home chord, a breath after the second.
  4. Sing the hook once more, then hear yours beside the guide's. The app hears the jump in pitch, not which voice made it.

Singing safely

Voices that are still breaking should wait before yodeling. Keep every flip light and at a medium volume, land gently, and stop if anything tightens, tickles or hurts.

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.
Start the beginner course Open the app How Stackapella works

More free tools

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

See all 17 tools