Round Midnight

Thirty-two different scales across sixty-eight chords. It's the tune with the most distinct scales in this entire library — more than pieces three times its length.

Monk wrote a harmony that changes its mind every bar. Eleven tonal centres, eleven half-diminished chords, thirty-five dominants. No automatic reading is possible here: every chord is its own case, which is why Round Midnight separates people who play jazz from people who really play jazz.