Key of A Minor

Everything the key of A minor contains: its scale, its seven diatonic chords, and its closest relatives.

The key of A minor is built on the A natural minor scale. Harmonizing that scale in thirds yields its seven diatonic chords: Am – B° – C – Dm – Em – F – G. Its relative major — the key sharing exactly the same notes — is C major, and its parallel major is A major.