Harmonic minor keys are used when writing chords. There is another ... Harmonic minors use the relative major key signature and raise the seventh note of the scale. For example, in A harmonic ...

If we were to raise the 7th, we would have a C minor chord with a major 7th. Now check Example 5! Using the open fifth string ...

In guitar circles, describing a chord as ‘G’ without any other information would usually mean a G major chord. Once we get into minor chords ... a chord beyond the 7th, we start adding ...

which is lowered by a semitone to become a minor 7th. It's a crucial difference that gives Mixolydian licks and chord progressions a bluesier edge than the sometimes overly bright-sounding major ...