This is pretty much based on picking it up with the ear.

(on the piano play an A minor with your left hand. on guitar, play strings A and D
together..this substitutes for the piano)

play with the song to a standard E tuning guitar and u shud find it pretty accurate.

PIANO SONG: 
SUBMERSED:
Tuning: EBGDAE

(Verse)
Am           F                   G
You curse me for the things I've done and said
Am           F             G
You live your life in confusion fully mislead
Am           F                   G
You let the things that mean the most slip away
Am           F                G
You let the questions inside grow instead of fade


(Chorus)
C                      F                G
I've been walking this road for far too long
G
To turn and walk away
C                      F                G
I've been walking this road for far too long
                 Am    F   G
Listen to what I say 
G                Am    F   G
Listen to what I say


(Verse 2)
Am            F                  G
You plant the seed that's inside me so deep
Am          F            G
You shelter me so naturally and complete
Am            F                G
I'll take all that you give to me you'll see
Am            F              G ---stop---
I'll give it back tenfold I hope you will receive

(Chorus)
C                      F                G
I've been walking this road for far too long
G
To turn and walk away
C                      F                G
I've been walking this road for far too long
                 C   
Listen to what I say 
                     F
And you're taking my life
                     G
And you're taking my time
               
And you're taking my skies
                         C    F  G
That fill my nights with you yeah


(Bridge)
Am     F           G
In the end I could walk away
Am     F           G
In the end I could walk away
Am     F          G 
In the end I will find my way
Am     F           G
In the end I could walk away

(---Havnt worked out the solo yet..cbf)

Just guitar:
(Chorus)
C                      F                G
I've been walking this road for far too long
G
To turn and walk away
C                      F                G
I've been walking this road for far too long
(STOP)                  
Listen to what I say 

C                    F
And you're taking my life
                     G
And you're taking my time
               
And you're taking my skies
                         C    F  G
That fill my nights with you yeah

(Chorus)
C                      F                G
I've been walking this road for far too long
G
To turn and walk away
C                      F                G
I've been walking this road for far too long
                  Am
Listen to what I say

来源：www.ultimate-guitar.com