Moving beyond 7th chords, we enter the huge, shimmering, full-orchestra sounding world of 9th chords. Simply put, 9th chords are extensions of 7th chords. In fact, there is a corresponding 9th chord for each of the three types of 7th chords: Cma7 Dmi7 G7 Cma9 Dmi9 G9 Here is the structure for major 9th chords: […]