When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: David Redfern/Redferns Terms such as ‘altered’ and ‘extended’ chords are relatively ...

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 ...

We can make our chords more interesting by adding extra notes… but not just any. So far in this series of practical music theory tutorials we’ve dealt with basic three-note triads, but we’re going to ...