In this book we propose a working method based on classic books such as Gary Chester or Gary Chaffe that it will provide us components that give a greater projection if possible. This method is based on the use of the voice and the concept of singing. In this volume, there is a wide range of Odd time measures, displacements, modulations, and polyrhythms. A whole challenge explained in a very simple and orderly manner. A working method to not only acquire mastery in these concepts but also to become great improvisers about them. Great book to develop your musicality, with a unique system that expands your knowledge on this type of topics.