From bossanovas to Carole King and even James Bond villains, the major seventh can completely change your song’s mood.

We’re using the notes C, E and G ... If you say to a musician that you would like a chord of C major 7, you will get a very different style of chord, which will not be what you want!

A dominant 7th is built on the dominant note. It functions as a type of chord V. In this example you will hear both chord I of C Major, and the dominant 7th chord. You can follow along with the ...