Sharp Key Signatures:
- C major = no sharps or flats
- G major = F#
- D major = F#, C#
- A major = F#, C#, G#
- E major = F#, C#, G#, D#
- B major = F#, C#, G#, D#, A#
- F# major = F#, C#, G#, D#, A#, E#
- C# major = F#, C#, G#, D#, A#, E#, B#
Flat Key Signatures:
- F major = B♭
- B♭ major = B♭, E♭
- E♭ major = B♭, E♭, A♭
- A♭ major = B♭, E♭, A♭, D♭
- D♭ major = B♭, E♭, A♭, D♭, G♭
- G♭ major = B♭, E♭, A♭, D♭, G♭, C♭
- C♭ major = B♭, E♭, A♭, D♭, G♭, C♭, F♭