Related: When I was off work in December I used graph theory to find chord paths through keys: http://signalsandsorcery.com/ http://signalsandsorcery.com/ You

Related: When I was off work in December I used graph theory to find chord paths through keys: http://signalsandsorcery.com/ http://signalsandsorcery.com/ You can see from the graph that chords exist in multiple keys and you can move from one key to another via these shared chords known as 'pivot chords'