Everything You Ever Wanted to Know about 7th Chords

From LivingPianos.

Welcome to LivingPianos.com, I’m Robert Estrin. Today, you’re going to learn everything you ever wanted to know about 7th chords. I recently put out a video about triads. Triads are chords built on thirds containing three notes. 7th chords are kind of an extension of triads. A major triad consists of two different types of thirds: a major third on the bottom and a minor third on top. A minor third on the bottom and a major third on the top gives you your minor triad. A diminished triad consists of two minor thirds. An augmented triad consists of two major thirds.