Extended Chords -- Those big, fat, juicy chords - jazz chords

Extended Chords: How to Form Them & Use Them Extended chords are chords which are bigger than a triad (a 3-note chord). You'll learn how to form 7ths, 9ths, 11ths, and 13ths, and then you'll learn to voice them (position them on the keyboard so your hand can reach the entire chord.) Some people call these chords jazz chords because they remind them of sounds they hear in jazz. But extend..