4♭

4♭ indicates a key signature with 4 flats. 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 A♭ Major.

Keys and modes written with this key signature include A♭ Major, B♭ Dorian, C Phrygian, D♭ Lydian, F Minor.

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