(Music Sales America). This series of practice books by Trevor Wye is an invaluable addition to study for all flautists. Each book concentrates on a different technical problem covering all aspects of playing the instrument. Each book serves as a step-by-step guide with plenty of helpful exercises for all registers. Volume 1 focuses on tone-building, developing different tone colors, breath, pitch control and flexibility. | Trevor Wye Practice Book For The Flute, Paperback | Indigo Chapters