High Achiever Piano Instructor: The HAPI Book Pianist, composer, and educator Roger Hayden has regularly brought beginning piano players to rapid happy musicianship with methods from his lesson book, the High Achiever Piano Instructor. Called The HAPI Book, the entertaining, multi disciplined approach energetically develops keyboard skills with minimum effort and far less time. Dexterity, rhythm, harmony and literacy grow quickly. Many players skillfully perform intermediate level piano music in one or two years. Sight reading, playing by ear, and knowing the keys, the fingers dance, the...