I’ve been trying to wrap my mind around the key of a song and the chords and notes in each. All across the internet are examples of these, just not in a format I found useful. I created this key and chord chart to help me know which notes are in each chord and which chords are in each key. Perhaps you’ll find it useful.

Please keep in mind there may be errors as I put this together, though I did try to be make this an accurate chart.