A normal C major chord is C-E-G, but you can easily change it to E-G-C, called the 'first inversion', or G-C-E, the 'second inversion' - the bass note has changed, but it's still the same chord, with ...

In music theory, an extension is similar in concept to a house extension, except that, rather than three-bed semis, we’re dealing with three-note chords. By definition, to extend is to make something ...