Classical Guitar for the Young (Level 3) Willis Series Softcover Written by Jay Traylor. Level One features a clear, gradiant introduction to solo technique and music reading fundamentals. Includes photos, diagrams, illustrations, and fun folk songs that children will enjoy playing. Level Two proceeds to application of technique and continued development of music reading skills. Level Three is for the maturing student with even more technical and reading skills, with an historical perspective of the classical guitar and its music.