How to Memorize Guitar Chords and a Little Theory ☆ Brand new, unused item. ☆ With obi (sleeve). ☆ With order card. * Derive 600 chords using the rule of 7. * Don't rely on memory ↓ Super efficient way to memorize guitar chords Although it is a new, unused item, it is a used item, so Thank you for your understanding. Thank you for viewing. #GuitarChords #GuitarBook