I played these chords on the piano, I haven’t tried it on the guitar. Goodluck 
with practising this everyone!! I’ll hope you’ll enjoy this.
Rufus, Martha, Louden Wainright – What ‘ll I Do
[Intro]
Bm/F#        Fm#/C#      Fm#/A7    A7+5
[Verse]
D                                  Fm#/C#   
Gone is the romance that was so define
      D          A7       D    A7+5
It’s broken and cannot be meanted
D                                           F#/C#
You will go your way And I wil go mine
                                 C#7              F#   A7                
And now that are love dreams have ended
[Chorus]
                        D         Gm(6)        D              Gm
What'll I do when you           Are far away
        D               A7                D
And I'm blue, What'll I do?
                        D
What'll I do when 
GM              D              GM
I Am wondering who
        D               A7
Is kissing you, 
                        D    D7
What'll I do?
***                G               EM
What'll I do with just
        G               GM6/E 
A photograph
        D                B7            E7   A7       
To tell my troubles to?         
                        D                               
When I'm alone                          
                GM      D              GM             
With only dreams of you         
                D               A7
That won't come true, 
                        D       A7
What'll I do?
[Interlude]
D Gm(6)D Gm D A7 D A7
D GM D GM D A7 D D7
***
What'll I do with just 
A photograph
To tell my troubles to?
When I'm alone
With only dreams of you
That won't come true, 
What'll I do?           2x       INSTEAD OF D AT END YOU PLAY GM6
                        D       GM6
What ‘ll I do
                        D       GM6
What ‘ll I do
                        D       GM6
What ‘ll I do
So if you got any questions or comments, please leave them at manon.buwalda88@gmail.com
About the composer, Irving Berlin check: 
http://www.jewishvirtuallibrary.org/jsource/biography/berlin.html
    
    
    
    来源:www.ultimate-guitar.com