1♯

1♯ indicates a key signature with 1 sharp. 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 G Major.

Keys and modes written with this key signature include A Dorian, C Lydian, D Mixolydian, E minor, G Blues, G Major.

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