The Aeolian scale, commonly known as Natural Minor scale, is a minor scale and its home chord is a minor triad.

 

The intervals in this scale after the Tonic note are Major 2nd, Minor 3rd, Perfect 4th, Perfect 5th, Minor 6th and Minor 7th. 

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The Swars are Sa, Re, ga, ma, Pa, dha, ni. – all Swars Shuddh except ga, dha and ni.

This scale is also called the Aeolian Mode of the Diatonic Scale, as it has the same interval spacing as the standard major scale, but uses the 6thnote of the major scale as its Tonic note.  For instance, A Aeolian scale (A, B, C, D, E, F, G) is also the 6thmode of the C Major scale (C, D, E, F, G, A, B). 

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Songs based on both scales will have the same chords, but the home chord will be different. In a song based on A Aeolian scale, you would commonly find the chords Am, C, Dm, Em, F and G. You could use a B-dim triad as well but it’s not very common. 

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Here’s a fretboard diagram showing the notes in A Aeolian scale.