A first of its kind, the At a Glance series pairs an instructional DVD lesson taught by a professional guitarist with a supplemental book for a comprehensive learning experience. Each book/DVD features several lessons pertaining to one topic, and the DVD lessons feature on-screen music. The lessons are loaded with valuable tips and information. More Guitar Chords – At a Glance features five lessons, including: Triad Inversions • Seventh Chord Inversions • Essential 7th Chord Shapes • Ninth Chords • Slash Chords and Polychords.