Just transform into five different forms! Master everything from basic to tension chords! For acoustic guitar players, memorizing numerous chord forms is essential. "But rote memorization is inefficient, and reading through theory books is too difficult." This book is for acoustic guitar players who are worried about this. This book uses rational know-how to transform five types of chord forms and derive any chord. This is a must-have for all acoustic guitar players, from those who enjoy singing and playing to those who want to play jazz or bossa nova on acoustic guitar. No more chord books! [CONTENTS] ■ Preparation 1 The framework of the basic 5 chords = Power chord ◎□5 Power chord A type of power chord that uses two strings ◎□5 Power chord A type that uses three strings, including one octave above the root note ■ Preparation 2 Check the five basic chords ◎□ Major chord Create basic chord 1-2 from a power chord ◎□ Major chord Create basic chord 3 from a power chord ◎□m Minor chord Create basic chord 4-5 from a power chord ■Basics 1 Variations on major chords ◎□△7 Major seventh A stylish sound widely used in everything from pop to jazz ◎□7 Seventh chord An essential blues chord with an unstable sound ◎□sus4 Sus four A convenient chord that adds spice to chord progressions ◎□7sus4 Seventh sus four An ornamental chord often used in combination with a seventh ◎□add9 Add ninth A bright sound that gives a sense of rich spaciousness ◎□aug Augmented chord A mysterious sound that can be used as an accent ◎□6 Major sixth A clear, transparent sound ■ Basics 2 Variations on minor chords ◎□m7 Minor seventh A brighter sound than a minor chord ◎□m△7 Minor major seventh A unique chord with a mysterious sound ◎□madd9 Minor ad ninth A sad sound with a deep minor feel ◎□m7 (♭5) Minor seventh flat fifth A melancholic, languid sound ◎□dim Diminished chord A chord that is useful for connecting chords ■Advanced 1 Adding tension to a major seventh ◎□△7 (9) Major seventh ninth A stylish chord often used in jazz and bossa nova ◎□△7 (♯11) Major seventh sharp eleventh An unstable chord that creates a sense of tension ◎□△7 (13) Major seventh thirteenth An attractive, sophisticated sense of tension ◎□6 (9) Sixth ninth A sound that combines melancholy and brightness ■Advanced 2 Adding tension to a seventh chord ◎□7 (9) Seventh ninth A standard tension chord used in a variety of genres ◎□7 (♭9) Seventh flat ninth A chord characterized by a dynamic sound ◎□7 (♯9) Seventh sharp ninth A stimulating sound often used in rock and jazz ◎□7 (♯11) Seventh sharp eleventh A chord with a lack of stability and a floating feeling ◎□7 (13) Seventh thirteenth A tension chord that gives a feeling of gentleness ◎□7 (♭13) Seventh flat thirteenth A convenient chord that can also be used for decorative approaches ■Advanced 3 Adding tension to minor sevenths ◎□m7 (9) Minor seventh ninth A combination of minor and stylish sounds ◎□m7 (11) Minor seventh eleventh A complex harmony that combines a floating feeling with a minor feeling ■Appendix 1: Variations of the open G chord and the open D chord ■Appendix 2: Other open chords Depending on stock availability, we may not be able to provide multiple items. In addition, if the item is out of stock, we may not be able to order it for you due to reasons such as it being out of print. We appreciate your understanding in advance.