Enharmonic Key Signatures
Definition of enharmonic
Enharmonic is an adjective who means: having the same pitch in the tempered scale but written in different notation.
Notes, intervals, or key signatures can have their enharmonic equivalent.
For a key signature, an enharmonic key signature is a key signature that sounds the same as another key signature on a piano (tempered scale)
For example, G flat Major scale and F sharp Major scale are enharmonic keys because they are being played with the same keys on a piano but their names are different:
G flat Major scale
F sharp Major scale
List of enharmonic key signatures
Below is list of list of enharmonic key signatures:
C sharp Major (7#) and D flat Major (5b)
F sharp Major (6#) and G flat Major (6b)
B Major (5#) and C flat Major (7b)
And below are some other scales who sound the same but without key signature: