Open or 12th fret, Key of F

1st or 13th fret, Key of Gb

2nd or 14th fret, Key of G

3rd or 15th fret, Key of Ab

4th fret, Key of A

5th fret, Key of Bb

6th fret, Key of B

7th fret, Key of C

8th fret, Key of Db

9th fret, Key of D

10th fret, Key of Eb

11th fret, Key of E