Every year few millions of Americans start to study music. After one year 80% of them stop this studying. They are not talented enough? But what they are studying for whole year long. All music theory can be delivered for 30 minutes. In this book we deliver music theory in historical and logic succession demonstrating it on examples for playing piano and keyboards. This book really helps you.Every year few millions of Americans start to study music. After one year 80% of them stop this studying. They are not talented enough? But what they are studying for whole year long. All music theory can be delivered for 30 minutes. In this book we deliver music theory in historical and logic succession demonstrating it on examples for playing piano and keyboards. This book really helps you.