12 Major Pains In The Ass - A Quick Recap

Gb Maj has 6 flats - Bb Eb Ab Db Gb Cb Use F# maj

G Maj has 1 sharp - F#

Ab Maj has 4 flats - Bb Eb Ab Db

A Maj has 3 sharps - F# C# G#

Bb Maj has 2 flats - Bb Eb

B Maj has 5 sharps - F# C# G# D# A# (E) (B)

Cb Maj has 7 flats - Bb Eb Ab Db Gb Cb Fb Use B maj

C Maj has no flats or sharps

C# Maj has 7 sharps - F# C# G# D# A# E# B# Use Db maj

Db Maj has 5 flats - Bb Eb Ab Db Gb (C) (F)

D Maj has 2 sharps - F# C#

Eb Maj has 3 flats - Bb Eb Ab

E Maj has 4 sharps - F# C# G# D#

F Maj has 1 flat - Bb

F# Maj has 6 sharps - F# C# G# D# A# E#

Colour indicates other enharmonic scale used more often than not.

I think there's another pattern dat can be deduced with C maj being the centre point.

1. The number of of sharps or flats are then mirror imaged. It will then have this pattern, 6143257 C 7523416. For example, Bmaj and Dbmaj have 5 sharps and 5 flats respectively.

2. We get 3 enharmonic scales. For example, F# with 6 sharps = Gb with 6 flats. C# with 7 sharps = Db with 5 flats, where E#=F and B#=C. Cb with 7 flats = B with 5 sharps, where Fb=E and Cb=B.

3. Therefore, F relates with G, B relates with D and E relates with A. C mirrors itself.