This book is the product of 35 years of studying and teaching interval awareness in music.  The text provides a step-by-step method for assimilation of, as well as graded exercises for, each interval.  Each chapter concludes with mastery exercises and etudes.  The skills in this text will equip students to hear, recognize, read and write music through the use of musical intervals.  This is particularly helpful in dealing with music that is chromatic, tonally ambiguous or rapidly modulating.  Book.