By combining details of ancient Middle Eastern Musical "Maqam" teachings and the physics of Just Intonation, which describe perfect harmony, Cameron Powers is able to present a simple solution to these musical mysteries. Musicians can now explore the vast collections of ancient musical modes. Great players and singers unconsciously move into these modes. That's what makes them great! Why not make this technique conscious? Finding and performing perfectly harmonious note intervals in Arabic music maqam systems. Knowledge of quartertones is not enough. This book explains how the maqamat follow the laws of acoustic physics and provide a history of clues given by traditional musicians which demonstrate that this knowledge was available to those who used deep listening while tuning their instruments. The intervals described as "just intonation" are the exact ones found in Arabic music. This book provides in-depth information which can help the practicing musician find the magic of playing perfectly harmonious intervals.