This book is a response to the proliferation of the usage of the altissimo register by composers and performers and is intended to prepare the advanced saxophonist with the ability to meet the demands of the modern repertoire. Etudes in a variety of musical styles, practice concepts, exercises, and a brief history are included to aid in the development of the altissimo register. In addition, this book is meant to demonstrate greater potential for the altissimo range for performers and composers.