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Unit 1 · A part above

Major and minor thirds

Learn why a third above switches between major and minor to stay in the key, and follow the scale two notes up over the chords instead of counting. Free.

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More in A part above

What it teaches

A third above switches between major and minor to stay in the key. You don't count it: you follow the scale, two notes up.

Major thirds. Do to mi, fa to la, so to ti

Minor thirds. Re to fa, mi to so

The chords decide. Listen to them under you

What you sing

  1. Listen to each, as often as you like, then choose the third that fits.
  2. The guide climbs do re mi fa so; you sing a third above each, over the chords.
Try one round

Singing safely

Sing at an easy volume, in the middle of your range. Stop if anything tightens, scratches or hurts, and rest your voice.

Free tools by Stackapella

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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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