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Converting A to Asus2
An A chord is A(1), C (3),
and E(5), and an Asus2 is A(1), B(2), and E(5). So you are going
to lower the C (3)
on the 3rd and 1st strings down to a B(2) a whole step lower.
|
A
|---|---|-C |---| -1st string
|---|---|---|-A-|
|-C |---|---|-E-|
|---|-A-|---|---| -4th string
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5th fret
A = 1, C = 3, E = 5
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Asus2
|---|---|-B-|---|---|---| -1st string
|---|---|---|---|---|-A-|
|-B-|---|---|---|---|-E-|
|---|---|---|-A-|---|---| -4th string
|
5th fret
A = 1, B = 2, E = 5
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That looks nice on paper, but you are not going to play this. This is an example of a theoretically correct arpeggio form, but not a practical or useful one. Move that B to the 4th string and you are in business.
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Asus2
|-B-|---|---|---| -1st string
|---|---|---|-A-|
|---|---|---|-E-|
|---|-A-|---|-B-| -4th string
|
5th fret
A = 1, B = 2, E = 5
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Here is the other common major arpeggio shape with the root on the 4th string converted to an Asus2.
|
A
|-A-|---|---|---| -1st string
|-E-|---|---|---|
|---|---|-C |---|
|---|---|---|-A-| -4th string
|
5th fret
A = 1, C = 3, E = 5
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Lower the C (3) on the 3rd string down to a B(2) a whole step lower. You could also add the B(2) to the 1st string a whole step higher than A(1).
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Asus2
|-A-|---|-B-|---| -1st string
|-E-|---|---|---|
|-B-|---|---|---|
|---|---|---|-A-| -4th string
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5th fret
A = 1, B = 2, E = 5
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Page 4, Converting A to Adim
Page
6, Converting A to Asus4 
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