Also C Major (Ionian), D Dorian
A Natural minor (Aeolian): A B C D E F G. Formula 1 2 ♭3 4 5 ♭6 ♭7. Same notes as C Major (Ionian), D Dorian, E Phrygian. The natural minor scale: sad and serious, the basis of minor keys in rock, pop and classical music.