This book lists approximately 2,000 chords that conform to my Swan musical scale. The chords listed are playable on pianos or similar keyboard instruments that are tuned to the Eagle 53 Musical Tuning. The Swan Scale is an eight note subset of Eagle 53 and is very close to this just scale: 1/1, 16/15, 9/8, 5/4, 4/3, 3/2, 8/5, 15/8, 2/1.... E, F, F#, G#, A, B, C, D#, E. Any chord progression using any of the 2,002 strict or jazz chords listed should be good.