This is one of the finest books of musical instruction for any instrument that I have ever read. Grey starts the book with the assumption that the reader knows next to nothing about the Irish style flute and its traditions. Layer by layer he inculcates you into the playing style and the musical heritage of Irish pipers and flutists. He has developed a logical, comprehensive notation system showing the learner how to accurately reproduce the rapid fluttering ornamentations used by Irish pipers/flutists/pennywhistlers. Virtually every aspect of making music with a wooden flute (or pennywhistle) is covered, including ergonomic hand and body positioning, musical breathing, fingering exercises, but mostly how to get THE SOUND of that gorgeous instrument, the Irish-style flute. Grey is a keen observer and analyst who apparently compiled notes for years in order to write this book. This is a labor of love from a great teacher and performer. It will be the foundation of instruction for Irish style flutists for many, many years to come.