Terms such as ‘altered’ and ‘extended’ chords are relatively simple to explain. Extended chords add other notes from the scale to the existing root-3rd-5th triad (for example, C-E-G), so if we add a ...

And then the root is the highest note, giving the whole chord a less obviously ‘guitar’ sound. Strictly speaking, it’s E7add6, but it’s often called E13. E9. The content of this chord isn’t all that ...

Another chord that has been debated for a long time is the E7/G# chord Noel Gallagher plays in the pre-chorus of Don’t Look Back in Anger. Many guitar players have played this as a regular E7 shape ...