Chords in Music : sus2, sus4t M4, add2/2, add5, power chords/5

Suspended Chords:
A suspended chord is a chord in which the 3rd is replaced or accompanied by either a perfect 4th or a major 2nd note.

Suspended 4th:
Noted as "Xsus" or "Xsus4"
Composed of 1st + perfect 4th + perfect 5th notes, of X ascending chromatic scale.
(1 4 5)

Suspended 2nd:
Noted as "Xsus2"
Composed of 1st + major 2nd + perfect 5th notes, of X ascending chromatic scale.
(1 2 5)

Major 4th:
Noted as "X₄"
Composed of X major chord (X) + the perfect 4th, of X ascending chromatic scale.
(1 3 4 5)

Added 2nd:
Noted as "X2"
Composed of X major chord (X) + the major 2nd, of X ascending chromatic scale. Usually replaceable by Xadd9.
(1 2 3 4)

Added 5th:
Noted as "X₅"
Composed of X major chord (X) + the perfect 5th (another one), of X ascending chromatic scale.
(1 3 5 5)

Power Chords:
Noted as "X₅"
Composed of the bare 1st and 5th notes, of X ascending chromatic scale.
(1 5)

Chords in Music:

• Chords in Music (major, minor, augmented, diminished)
• Chords in Music 2 (sus2, sus4t M4, add2/2, add5, power chords/5) (reading)
• 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-2.html

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