The natural minor scale is part of the major scale, made by building a scale from the 6th note of the major scale. This scale is also known as the Aeolian mode, each note in the major scale has a mode name.
It has a smooth sound and is used for many minor key songs.
If you raise the 7th of this scale you will have the Harmonic minor scale.
If you raise the 6th and the 7th of this scale you will have the Melodic minor scale.
This is where the minor Pentatonic scale comes from.
Here is a written A minor Natural.
A Minor Natural
Here is what it sounds like
Here are the natural minor scales with their relative major scale it was built from. Eb and D# are the same pitch but written different. This is where I switched to the sharp keys.
The relative major scale is where the minor scale came from. It contains the same notes.
You also have a tonic minor scale relationship too. The C major scale can go into any of the C minor scales very easily. You hear this in songs often, where a major chord changes to a minor chord.
The Beatles song Norwegian Wood does this for the break in the song and then goes back to major for the verse.
Natural Minor Scale Chords
Here is a list of the chords for the natural minor scales. These are the same chords as in the major scale but I thought you might like to look at them from another point of view.
The natural minor scales are where we get minor blues progressions with minor chords for the V chord. Most of the time the V chord is a dominant 7th
This scale also contains a minor and a major Pentatonic scales.
Minor Blues Progression
You will see this progression with the V chord(Em) as a dominant 7th(E7) more often than with a minor 5th chord.
If it has a dominant chord then the progression comes from the Harmonic or Melodic minor scales as they have a dominant 5th chord in them.