Chords in Music : 9/add9, m9, 6/9, m11, add11/11, m13, add13/13

A bit more about intervals:

Some intervals are written as beyond the octave (8th), e.g. 9th, 11th, 13th, etc. The intervals indicated here can be easily found out by subtracting 7 from the number give. The notation indicated that the the note can be found in the 2nd octave (or higher) by extending the scale beyond the octave containing the root note. This is a way of actually indicating to the player to add the higher pitched notes of the higher octaves. The chords using these notes are referred to as "extended chords." Other unindicated notes may also be a part of these chords.

Dominant 9th / Added 9th:
Noted as "X₉" or "X_add9"
Composed of X major chord (X) + the major 9th (or the 9-7=2nd note of the 2nd octave) note, of X ascending chromatic scale.
(1 3 5 9)

Minor 9th:
Noted as "Xm₉"
Composed of X major chord (Xm) + the major 9th (or the 9-7=2nd note of the 2nd octave) note, of X ascending chromatic scale.
(1 3 5 9)

Major 6th / 9th:
Noted as "X_6/9"
Composed of X major chord (X) + the major 6th + 9th note (or 9-7=2nd note of the 2nd octave) i.e. major 2nd note, of X ascending chromatic scale. .
(1 3 5 6 9)

Minor 11th
Noted as "X_m11"
Composed of X minor chord (X) + the perfect 4th note of the next octave, of X ascending chromatic scale.
(1 3b 5 7 9 11)

Added 11th :
Noted as "X_add11" or "X11"
Composed of X major chord (X) + the perfect 4th note of the next octave, of X ascending chromatic scale.
(1 3 5 11)

Minor 13th
Noted as "X_m13"
Composed of X minor chord (X) + the perfect 6th note of the next octave, of X ascending chromatic scale.
(1 3b 5 13)

Added 13th :
Noted as "X_add13" or "X13"
Composed of X major chord (X) + the perfect 6th note of the next octave, of X ascending chromatic scale.
(1 3 5 13)

Also read:

• The P/Q type (C/A, D/F#) and of altered guitar chords
• Numerical notations(xx2220 type) of altered guitar chords

Chords in Music:

• Chords in Music (major, minor, augmented, diminished)
• Chords in Music 2 (sus2, sus4t M4, add2/2, add5, power chords/5)
• Chords in Music 3 (m6, mM6, add6/X6, Xm7/-7, XM7, 7, m7b5/-7b5, mM7)
• Chords in Music 4 (9/add9, m9, 6/9, m11, add11/11, m13, add13/13)

http://basicmusictheory.blogspot.com/2008/12/chords-in-music-part-4.html

Liked 'Chords in Music : 9/add9, m9, 6/9, m11, add11/11, m13, add13/13' enough to share / save?

Chords in Music : 9/add9, m9, 6/9, m11, add11/11, m13, add13/13