(Guitar Book). Adapted from Carl Czerny's School of Velocity, Op. 299 for piano, this lesson book explores 12 keys with 12 different approaches or "treatments." You will explore a variety of articulations, ranges and technical perspectives as you learn each key. These arrangements will not only improve your ability to play scales fluently, but will also develop your ears, knowledge of the fingerboard, reading abilities, strength and endurance. In standard notation and tablature.