First and foremost: THIS IS NOT A METHOD BOOK. It is precisely what it says it is: 300 Progressive Sight Reading Exercises!Volume One is comprised of 300 progressive eight-bar exercises that cover the keys of C Major, F Major, G Major, A Minor, D Minor and E Minor. Time signatures include 4/4 (Common Time), 3/4, 2/4, 6/8, and 2/2 (Cut Time). The remaining key signatures, additional time signatures, tempo markings and dynamics markings will be covered in future volumes.All of the exercises are eight measures long. If one has done any study of formal analysis, they will find that eight measures is a typical ‘period’ of music and usually contains two, four-bar phrases (also typical in length). For example, many sonatinas, jazz standards, and pop songs use “32 Bar Form” (A A B A), “Binary Form” (A B), and “Ternary Form” (A B A), with each section often being eight bars. Thus, eight measures (one period of music) makes the perfect length for sight-reading studies in my opinion.