This book is about a new 12 notes per octave tuning called Eagle 53. This tuning was designed to improve on, and replace, the standard Western tuning: 12 Tone Equal Temperament. Some notes are higher than usual and others are lower in varying degrees. Many chords and scales are more in tune and some new and exotic chords and scales occur as well. Eagle 53 tuning is suitable for pianos and MIDI keyboards that can be retuned with the right software...