(String Letter Publishing). David Hamburger's supplementary chord book for the Acoustic Guitar Method is a must-have resource for guitarists who want to build their chord vocabulary! Starting with a user-friendly explanation of what chords are and how they are named, this book presents chords by key in all 12 keys, offering both open-position and closed-position voicings for each common chord type. Also includes info on barre chords, using a capo and much more.