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3 semitones · pure 6:5

The minor third

Three semitones, the third that makes a chord minor. It sounds darker and softer than a major third, and together its two notes blend sweetly.

Songs that start with a minor third

Going up: Greensleeves, from its first note to its second. Going down: Jesus Loves Me, the hymn, from "Je-" to "-sus".

The minor third in harmony

A minor chord is a minor third with a major third on top: A, C, E. A major chord is the other way round. Tuned pure, a minor third is 6:5, about 16 cents (a cent is a hundredth of a semitone) wider than a piano's, which is why a choir's minor chord can sound warmer than a keyboard's.

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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.

Questions

What is a minor third?

An interval of three semitones: A to C, or E to G. It's the bottom third of a minor chord.

How do I tell a minor third from a major third?

A major third is one semitone wider and sounds bright, like When the Saints Go Marching In; a minor third sounds darker, like Greensleeves. Play them one after the other here to compare.

Does a minor third always sound sad?

No. Its colour is darker, but plenty of cheerful tunes use it; whether music sounds sad depends on much more, like tempo and the chords around it.

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