4♯

4♯ indicates a key signature with 4 sharps. In standard music notation, this is shown at the beginning of the staff, indicating which notes are consistently altered throughout the piece. A common reference key for this signature is E Major.

Keys and modes written with this key signature include A Lydian, B Mixolydian, C♯ Minor, E Blues, E Major, F♯ Dorian.

Below is a list of songs written using this key signature.