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Sound Waves

Harmony

Pentatonic Scale

Chromatic Scale

Chords

Keys

Diatonic Chords

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Guitar Theory

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Piano Theory


Key
A group of notes used in a song.

Because not all of the 12 notes sound good together, we must select a set of notes to use in a song. This is a Key.

When a song says that it is in the key of C Major or D Minor this is simply telling you which of the 12 notes are used in this song.

That's it.

Major Key

Seven notes from the Chromatic Scale. The 1st, 3rd, 5th, 6th, 8th, 10th, and 12th intervals. It then repeats back from 1. This is one of the most common keys in music. Click the notes to play them.

1
2
3
4
5
6
7
8
9
10
11
12
1



Remember, the frequency of the starting note doesn't matter. The Major scale will always have these intervals.

Minor Key

Again, seven notes from the Chromatic Scale. The 1st, 3rd, 4th, 6th, 8th, 9th, and 11th intervals. It then repeats back from 1. This is also a very common Key.

1
2
3
4
5
6
7
8
9
10
11
12
1



There are many other keys, but these two are the most common. We'll save the other keys for a later lesson.

The Key Tool

Here's a little tool to help you find the notes in any Key. The Key is named after its first note. For example, a Major Key starting on C is in the Key of C Major.


Major
Minor
A
A#
B
C
C#
D
D#
E
F
F#
G
G#

C Major


A
A#
B
C
C#
D
D#
E
F
F#
G
G#
A
A#
B
C
C#
D
D#
E
F
F#
G
G#
A
A#
B
C

Next Diatonic Chords

Next we'll combine what we've learned about Chords and Keys.

Next Section


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