Musical key signatures

No sharps or flats

Key of C major or A minor

One sharp (F#)

Key of G major or E minor

Two sharps (F#,C#)

Key of D major or B minor

Three sharps (F#,C#,G#)

Key of A major or F# minor

Four sharps (F#,C#,G#,D#)

Key of E major or C# minor

Five sharps (F#,C#,G#,D#,A#)

Key of B major or G# minor

Six sharps (F#,C#,G#,D#,A#,E#)

Key of F-sharp major or D# minor

Seven sharps (F#,C#,G#,D#,A#,E#,B#)

Key of C-sharp major or A# minor

One flat (Bb)

Key of F major or D minor

Two flats (Bb,Eb)

Key of B-flat major or G minor

Three flats (Bb,Eb,Ab)

Key of E-flat major or C minor

Four flats (Bb,Eb,Ab,Db)

Key of A-flat major or F minor

Five flats (Bb,Eb,Ab,Db,Gb)

Key of D-flat major or Bb minor

Six flats (Bb,Eb,Ab,Db,Gb,Cb)

Key of G-flat major or Eb minor

Seven flats (Bb,Eb,Ab,Db,Gb,Cb,Fb)

Key of C-flat major Ab minor