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Enharmonic Change

Ab is the same note as G#,

Bb the same note as A#,

Eenharmonic change is a change that converts sharp keys into flat keys and flat keys into sharp keys.

By deducting from twelve the number of sharps in one key we can determine the number of flats in its enharmonic equivalent.

By deducting from twelve the number of flats we can determine the number of sharps in its enharmonic equivalent.

Flats	Key	same as	Key	Sharps
1	F Major		E sharp Major	11
2	B flat Major		A sharp Major	10
3	E flat Major		D sharp Major	9
4	A flat Major		G sharp Major	8
5	D flat Major		C sharp Major	7
6	G flat Major		F sharp Major	6
7	C flat Major		B Major	5
8	F flat Major		E Major	4