Book 1 of this comprehensive intermediate/advanced method focuses on technical aspects of playing, such as long tones, lip flexibility, finger flexibility, tongueing, upper register playing and endurance.  As in each of the other volumes in the series, the author has provided helpful text dealing with practice skills, warming up and how to overcome performance anxiety.  Book 2 focuses on harmonic studies, concentrating on intervals, chords and scales.   Book 3 concentrates on melodic studies, including intermediate etudes, vocalise studies, low-note etudes, rhythmic etudes, concert duets and advanced etudes.