(Essential Elements Guitar). Essential Elements for Guitar, Book 2 is a continuation of the concepts and skills taught in Book 1 and includes all of its popular features as well - great songs in a variety of styles, quizzes, music history, music theory, and much more. Concepts taught in Book 2 include: playing melodically in positions up the neck, playing movable chord shapes up the neck, playing scales and extended chords in different keys, more right-hand studies, fingerpicking and pick style, improvisation in positions up the neck, studying different styles through great song selections, and more!