Harmonic minor keys are used when writing chords. There is another version of the minor key known as the melodic minor. This is used when writing a melody. Each key signature has two possible keys.

Emotive and powerful, if you're looking to move listeners with your guitar playing then the ... the Dorian mode or the melodic minor scale. It even contains the notes of the good old minor ...

As a composer of instrumental guitar-based music ... to rely on relatively sparse lines based primarily on the D minor ...