I am learning music theory and I was told to transcribe some songs and also note the chords as roman numerals.
The song I have is in the key of D Major, but contains an A minor, which to my understanding is not part of this scale. The V of D Major would be an A Major, right?
So, I went on a google search bonanza and read some things about "altered chords". And since A Major became A Minor in my example, I guess that is what it is since it is the third that has been flattened. So, can I note this as I v IV for the progression "D Am G"?