why are there 3 minor scales?
My best understanding as to why there are 3 forms of minor is that it has to do with how a song modulates between different keys. Also, it has to do with chord qualities. If you are in a Major key, you have 3 Major chords ( tonic 1, Sub Dominant 4, and Dominant 5) in a minor key the 4 chord is minor, but the sub mediant or 6 chord is major. 5 is also a major chord in Minor Keys, but in order to make it that way, you have to raise the 7th scale degree of the tonic. If you were to write out the minor scale, with the raised 7th, you get the Harmonic for of the Minor Scale, which seems to be the most commonly used form of the minor, atleast that I have noticed. If this is confusing (and I wouldn’t be surprised if it is) you can look up music theory online, or if you have the chance, I would highly recomend that you take a music theory class.