[philbarr]

> The chords sound more jazzy when you go counter-clockwise (it is the circle-of-fourths)

As a side note, movement by fourths sounds more jazzy or "warm" because the interval of a 4th is itself a "warm" sounding interval. So if you want a warm sounding chord, slap a 4th in there.

In practice this often means adding an 11th (an octave above). So let's say you have a standard C7 chord (C E G Bb), if you want to make it sound jazzy/warm then add the F above.

If you want to demonstrate how warm a 4th is (or to get the feel for any interval) stack them up and play them together - C F Bb Eb