circle of fifth
This is how i learn ” Father Christmas Gave Dad An Electric Bed”. So, in the above circle every chord is at distance of fifth like C D E F G, here G is at fifth distance from C and so on. The above circle of fifth also helps to find the key signature (also called sharps) in the scale. So, in C major scale, there is no sharps. In G major scale, there is 1# i.e. F#.
Sharps appear in clockwise starting from F C G D A E B and Flats appear in anti-clockwise starting from B E A D G C F. The relative minor chord is always at 90 degree. So, the relative minor chord of C major is A minor and so on.
For making chord progression of any song, i have to first move to relative minor in 90 degree and back to original chord with M m m M M . For example C Major scale chord progression will be C Am Dm G C.
Major chord is made up of 1st , 3rd and 5th note. So, we can write like for C Major scale progression as,
1, 4, 5 = Major
2,3,6 = Minor
7 = diminised
M m m M M m
1 2 3 4 5 6 7 8
C D E F G A B C
E F G A B C D E
G A B C D E F G
If 3rd degree is flatten in major chord, it becomes minor chord. C Major chord C E G, now its minor chord is C Eb G. For diminished chord, flatten both 3rd and 5th degree. Augmented chord is to sharpen 5th degree.
Major Minor Diminished Augmented
5 5 5b 5#
3 3b 3b 3
1 1 1 1
For 7th major chord is same as above, but 7th chord is added too.
That’s it. Cheers!