DOMINANT DIRECTION
*clockwise arrow traces the formation of sharp keys. The dominant note (5th) of the old scale becomes the root of the next.

SUB-DOMINANT DIRECTION
*anit-clockwise arrow traces the formation of flat keys. The sub-dominant note (4th) of the old scale becomes the root of the next.

Circle of Fiths

No. of sharps	Major key	Minor Key
0	C	Am
1	G	Em
2	D	Bm
3	A	F#m
4	E	C#m
5	B	Abm
6	F#	Ebm
7	C#	Bbm
8	G#	Fm
9	D#	Cm
10	A#	Gm
11	F	Dm

Circle of Fourths