In addition to adding sevenths and ninths to triads, it is also possible to add elevenths and thirteenths (see compound and simple intervals for more information on these intervals). A chord to which ninths, elevenths and/or thirteenths are added is called an extended chord:


Extensions can be altered and combined in many different ways. For reasons of sound density, not all notes are commonly used. Here are some examples. Click on the buttons to build and listen to the chords:

Loading sounds (0%)...

Select a chord:

The following excerpt shows an example of these chords:


Gb Dominant 7th chord with 9th (Ab), 11th (Cb) and 13th (Eb)
C. Debussy, …La fille aux cheveux de lin
Read a complete analysis.

See C > Chord for related entries.

Search   •    Write to us

Creative Commons License
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
José Rodríguez Alvira.