(Educational Piano Library). Piano Technique Book 2 is the second book in our series of five books focusing on technical skills. Emphasizing the inseperable link between technique and musical expression, Piano Technique Book 2 presents Warm-Ups and Etudes that take the "routine" out of technique! Students are encouraged to build solid technical confidence and skills through short, musical exercises that correlate page-by-page with Piano Lessons Book 2.