Alfred's Basic Piano Library. Alfred's Basic Prep Course, Levels A through F, was written to answer a demand for a course of piano study designed especially for students who are five years old and up. This course offers a careful introduction of fundamentals, music that fits comfortably under the young student's normal hand span, plus constant reinforcement--all leading to results beyond those generated by other piano methods. After Lesson Book B, the student may progress to Prep Course, Lesson Book C or choose to go directly into the faster paced Level 1B of Alfred's Basic Piano Library. The complete Prep Course consists of six books (Levels A through F).