=
CKey Sig.
Key
Key Sig
Key
G
F
D
Bb
A
Eb
E
Ab
B
Db
F#
Gb
C#
Cb
Signatures
above four sharps or flats are seldom needed
With apologies!
To differentiate sharps from flats: The round part of the flat can be compared to the car tire which can go "flat" and/or The pound/number sign has a lot of "sharp" edges.