A sus 4 guitar chords

A - D - E

Chord Theory

Asus4 chords consist of the 1st, 4th and 5 notes of the diatonic root scale of A Major - the 3rd is omitted giving the chord an openness and in most cases, a need for resolution - generally back to the A chord.
A Major Scale A - B - C# - D - E - F# - G#
Key Signature key signature
Chord A suspended fourth - Asus4 (Asus)
Formula 1 - 4 - 5
Notes A - D - E

A sus 4 chords

Spelling: 1st(A), 4th (D), 5th(E)
1st 2nd 2nd (alt) 3rd
Righties: Asus4 
    e|---|---|---|
    B|---|---|-4-|
    G|---|-2-|---|
    D|---|-1-|---|
    A|---|---|---|
    E|---|---|---|x
Frets  1   2   3

Written: x02230 
Notes: x-A-E-A-D-E  
Open chord shape: Asus4 

Lefties:  Asus4
     |---|---|---|e
     |-4-|---|---|B
     |---|-2-|---|G
     |---|-1-|---|D
     |---|---|---|A
    x|---|---|---|E
Frets  3   2   1
 TAB     e |-0-|
         B |-3-|
         G |-2-|
         D |-2-|
         A |-0-|
         E |---|
         Asus4    
    e|-1-|---|---|
    B|-1-|---|---|
    G|---|---|-4-|
    D|---|---|-3-|
    A|---|---|---|
    E|---|---|---|x
Frets  5   6   7

Written: x07755
Notes: x-A-A-D-E-A


         Asus4
     |---|---|-1-|e
     |---|---|-1-|B
     |-4-|---|---|G
     |-3-|---|---|D
     |---|---|---|A
     |---|---|---|E
Frets  7   6   5
 TAB     e |-5-|
         B |-5-|
         G |-7-|
         D |-7-|
         A |-0-|
         E |---|
         Asus4
    e|-1-|---|---|
    B|-1-|---|---|
    G|-1-|---|-4-|
    D|-1-|---|-3-|
    A|-1-|---|-2-|
    E|-1-|---|---|
Frets  5   6   7

Written: 577755
Notes: A-E-A-D-E-A  
Openchord shape: Esus4 

           Asus4
     |---|---|-1-|e
     |---|---|-1-|B
     |-4-|---|-1-|G
     |-3-|---|-1-|D
     |-2-|---|-1-|A
     |---|---|-1-|E
Frets  7   6   5
 TAB     e |-5-|
         B |-5-|
         G |-7-|
         D |-7-|
         A |-7-|
         E |-5-|
           Asus4
    e|---|---|---|-4-|
    B|---|---|---|-3-|
    G|---|---|-2-|---|
    D|-1-|---|---|---|
    A|---|---|---|---|
    E|---|---|---|---|x
Frets  7   8   9  10

Written: x-0-7-9-10-10
Notes: x-A-A-E-A-D


           Asus4
     |-4-|---|---|---|e
     |-3-|---|---|---|B
     |---|-2-|---|---|G
     |---|---|---|-1-|D
     |---|---|---|---|A
    x|---|---|---|---|E
Frets  10  9   8   7
 TAB     e |-10|
         B |-10|
         G |-9-|
         D |-7-|
         A |-0-|
         E |---|

Notes

  • In the 3rd position, the chord is written x079-10-10. We separate any fret greater than 9 with a hyphen so as not to create confusion with double-digits, otherwise the chord above would be written x0791010... too confusing.
  • sus 4 chords are often used in all types of music. Whenever you play a major chord you always tend to add a sus4 and then back to the major chord, e.g., A - Asus4 - A, or D - Dsus4 - D etc. This tends to happen naturally when playing certain chords. The major chord to the sus4 creates a bit of tension, with a return to the major for resolution... works well.
  • Standard keys using the A sus 4 chord: A Major, D Major, F#m, and Bm. Each of the minor keys is the relative minor of the major keys, i.e., A/F#m, D/Bm. If you are playing songs in any of these keys, you may come across an Asus4 chord... generally played next to the A major or A7 chord.
  • Practice: If you want to practice playing a song with Asus4 chords, you could try I Won't Give Up by Jason Mraz, or Danny Boy by Eric Clapton.
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