Music Theory Online

The key signatures for keys you should know by now are seen below:

C major: No key signature
G major: F sharp
D major: F sharp, C sharp
A major: F sharp, C sharp, G sharp
E major: F sharp, C sharp, G sharp, D sharp




F major: B flat
B-flat major: B flat, E flat
E-flat major: B flat, E flat, A flat
A-flat major: B flat, E flat, A flat, D flat




Relative Minors
A major: No key signature
E minor: F sharp
B minor: F sharp, C sharp
F sharp minor: F sharp, C sharp, G sharp
C sharp minor: F sharp, C sharp, G sharp, D sharp




D minor: B flat
G minor: B flat, E flat
C minor: B flat, E flat, A flat
F minor: B flat, E flat, A flat, D flat



Using key signature, can you write out the following scales:


C harmonic minor


F melodic minor