Can one measure the "distance" between chords? If so, how?
I was reading an article an the author gave the following sequence of chords:\nC A7 Dm G C \n\nI would like to measure the "distance" if there is such a thing between C and A7. Can this be done? \n\nIn other words, I am asking if there are any prominent models that somehow quantify relationships between chords in terms of a metric space (i.e. with a distance function).