When a song is in the key of C major, the Am chord will seamlessly intertwine with the tonic. “Tonic” is a fancy word for the root chord. It’s often referred to as the 1 chord, or the Roman numeral I chord. This chord is dependent upon the key signature of the song- in this case, C major.
We have learned every major key has one relative minor chord associated with it. Am is the relative, or natural minor, for C. The C major scale and the Am scale have the same exact notes, just different roots, so you can’t go wrong…
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