I have nothing against a C chord. But what if there's another chord that sounds better? Or a chord that sounds more interesting, sad, happy, inquisitive or saucy? Let's keep our options open and dive into the seemingly limitless possibilities of chord substitutions. Pre Requisite Knowledge: How to play major and minor chords and their extensions (maj9, dom7, 11, etc.) (Covered in Music Theory I). Gear: Keyboard