Overview of The CAGED System – Lesson 23 Brian Haner Sr. In this lesson we introduce you to the CAGED system. Syn’s Tips Congratulations, this is a big step, you now know all of the shapes for every primary major chord there is! Now whenever you come across any major chord in any song there is, you will know how to play it AND in any position! If you don't know how awesome that is, you soon will. Help each other out in the "Lesson Comments" section below!