Play a few notes of a cheerful nursery rhyme, then a few bars of a slow lament, and almost anyone can tell you which is which. One sounds bright and settled; the other darker, more serious, perhaps a little sad. Musicians call these two moods major and minor. This lesson helps you hear the difference reliably, explains where it comes from, and gives you your first minor scale, A minor, which needs no black keys at all.
Listening first
Before any theory, just listen. Play the C major scale slowly, up and down, and notice how it sounds: open, confident, at home. Now play the white keys from A up to the next A. Same keys, same sort of steps, but the mood changes. It sounds more wistful, as if the music has turned towards the shade.
That difference in mood is real and very consistent. Major and minor are not about speed or volume: a fast piece can be minor and a slow one major. They are about the pattern of whole and half steps the music is built on.
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The A natural minor scale
A minor uses exactly the same white keys as C major, but it treats A as home instead of C. Its scale is A B C D E F G A, with no sharps or flats, so its key signature is empty, just like C major's.
This version is called the natural minor scale. Measure its steps and you get whole, half, whole, whole, half, whole, whole. The half steps fall in different places from a major scale, and that is what changes the mood. Because C major and A minor share the same notes, they are sometimes called relative keys: close relations that sound quite different.
A later lesson adds one black key to this scale to make another, very common form of minor.
The note that makes the difference
The clearest single clue is the third note of the scale. In C major, the distance from C up to E is four half steps. In A minor, the distance from A up to C is only three. That third note sits one half step lower, closer to home, and it is largely responsible for the darker colour.
Play C and E together, then A and C together. Then play the first five notes of each scale: C D E F G, and A B C D E. Listen for the third note in each. Most people hear the minor one as more serious.
The same tune, major then minor
A good way to train your ear is to play one melody in both moods. The Academy piece Major or Minor? does exactly this: the first half is in C major, then the same shape returns a third lower, in A minor.
The rhythm and the general shape are the same, but the second half ends on A and has a quite different mood. When you play it, let the major half sound bright and the minor half a touch softer and more thoughtful.
The left hand
The A minor scale in the left hand starts with finger 5 on the A in the bottom space of the bass staff. The fingering mirrors the C major scale.
Coming down, play 1, 2, 3 on A, G, F, then pass the thumb under to E and finish 2, 3, 4, 5 on D, C, B, A.
How to practise hearing and playing minor
- Play pairs of scales. C major, then A minor. Say "major" or "minor" as you finish each.
- Focus on the third. Play C-E and then A-C as pairs of notes held together. Describe each in a word.
- Five-finger positions. Right thumb on C: play C D E D C. Right thumb on A: play A B C B A. Hear the third note change the mood.
- Left-hand scale. Practise the A minor scale slowly, hands separately.
- Guess the mood. Listen to recordings of short pieces and decide: major or minor? Check yourself with the key if you have the music. Two minuets on this site make a good pair: the Minuet in G major and the Minuet in G minor.
- Play Major or Minor? or any short tune both ways, and exaggerate the change of mood.
Common mistakes
- Starting the scale on C. A minor uses the same keys as C major, but it must start and end on A, or it is simply C major again.
- Expecting a different key signature. A minor has none, just like C major.
- Rushing the left-hand crossing. The finger-3 cross onto F should be as smooth as the right hand's thumb under.
Try it in Pianuvo
The Academy lesson starts with listening: you hear major and minor side by side and decide which is which. Then you play the A minor scale and Major or Minor?, and each exercise listens as you play, on the on-screen keys, a MIDI keyboard, or a real piano through your microphone. It opens Unit 8: Minor keys and a Baroque minuet.