I was a little confused. I thought I heard Tomo say that he was playing chords in the key of A, but it seems like they are chords in G. Did I miss something. Also, excuse me for the beginner question, but what chords are you allowed to substitute in a key? For example, could I play an A7 instead of an A? I am enjoying these lessons so much by the way.
Here is Tomo's comment:
"Thanks so much for subscribing to my Guitar Wisdom. The music in this lesson is in the Key of G. Simple diatonic chords. You can play any chord in this key, so long as it sounds great to you. The best way to figure out what works for you is to learn some great-sounding songs. Later, when you create your own music, you will know which sounds you like to combine."