Harmonic minors use the relative major key signature and raise the seventh note of the scale. For example, in A harmonic minor there are no sharps or flats other than the raised seventh of G#.

Musicians simply must know their scales and he came up with a papercraft slide rule for major and minor scales. The system is very easy to use. He’s uploaded PDF files that let you print out the ...

The shapes, both major and minor, occur in every position and key ... You wouldn’t try to play every note in a scale ...