So-called “jazz” or “jazzy” chords were in use long before jazz, but it’s jazz musicians who have, arguably, made those most of 7th and extended harmonies. So, what are they? Simply put, jazz chords are triads—chords built from the 1, 3, and 5 of any given scale—with added 7, 9, 11, or 13 intervals. They can also include alterations, such as b5s, #5s, b9s, and #9s.

Rather than bog you down with more theory, let’s put these chords into practice, with plenty of points of reference from the rock genre. Along the way you should naturally start to develop an ear for, and an understanding of, their colorful sounds and benefits.