"The Red Book by Rubyana is the most definitive scale and exercise book for flutists available. This book contains scales, arpeggios, and exercises of every type, including a section for jazz and blues studies, as well as a listing of modal and ethnic scales. It can serve as a daily tool and reference for players of all musical backgrounds, and mastery of its contents will certainly bring a level of high proficiency and artistry to any player."The American Piper