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A Minor 7th is the relative triad of C Major 7th and C Minor 7th is the relative triad of Eb Major 7th.
C Minor 7th is 1-b3-5-b7.
A Minor 7th is the relative triad of C Major 7th and C Minor 7th is the relative triad of Eb Major 7th.
C Minor 7th is 1-b3-5-b7.