What is an extended chord in music?
Also know, what are 7th 9th and 11th chords?
7th chords can be extended to 9th, 11th and 13th chords. If you have a C7 (C dominant seventh), then the corresponding chords would be C9, C11 and C13 . The C9 is a C7 with a major ninth (or second) added. This is because there would be an interval of a minor ninth between the third and the eleventh.
Secondly, what is a major chord in music?
In music theory, a major chord is a chord that has a root, major third, and perfect fifth. When a chord has these three notes alone, it is called a major triad.
In music theory, an eleventh chord is a chord that contains the tertian extension of the eleventh. Typically found in jazz, an eleventh chord also usually includes the seventh and ninth, and elements of the basic triad structure. Variants include the dominant eleventh, minor eleventh, and the major eleventh chord.