I tabbed this out by humming and singing it because it was stuck in my head. This 
is my second tab so I know I'm not very good at this but this sounded kinda right 
to me. I think this sounds best finger-picked but you can strum as well. Comment/
rate! Any comments or corrections very welcome!

In The Mourning

Paramore

Singles Club

D tuning

F (133211@1)              C (x32010@1)       AmYou (x02210@1)escaped like a runaway train
F (133211@1)                C (x32010@1)       AmOff (x02210@1)the tracks and down again 
F (133211@1)                           C (x32010@1)               Am (x02210@1)         F (133211@1)       
And my heart's beating like a steam boat tugging all your burdens
C (x32010@1)       AmOn (x02210@1)my shoulders

F (133211@1) C (x32010@1)     GIn (320003@1)the mourning I'll rise
         F (133211@1) C (x32010@1)     GIn (320003@1)the mourning I'll let you die
         F (133211@1)C (x32010@1)name="chord_320003@1">G        F (133211@1)C (x32010@1)name="chord_320003@1">G
In the mourning all my worries

F (133211@1)                     C (x32010@1)         AmNow (x02210@1)there's nothing but time that's wasted
F (133211@1)                    C (x32010@1)     AmAnd (x02210@1)words that have no backbone
F (133211@1)                       C (x32010@1)              AmAnd (x02210@1)now it seems like the whole world's waiting
             F (133211@1)name="chord_x32010@1">C          AmCan (x02210@1)you hear the echoes fading?
 
         F (133211@1) C (x32010@1)     GIn (320003@1)the mourning I'll rise
         F (133211@1) C (x32010@1)     GIn (320003@1)the mourning I'll let you die
         F (133211@1)C (x32010@1)name="chord_320003@1">G        F (133211@1)C (x32010@1)name="chord_320003@1">G
In the mourning all my sorries

Am (x02210@1)      C (x32010@1)    G (320003@1)                   F (133211@1)     
And it takes all my strength not to dig you up
         C (x32010@1)                 GFrom (320003@1)the ground in which you lay
                    FThe (133211@1)biggest part of me
             C (x32010@1)
You were the greatest thing
      FAnd (133211@1)now you're just a memory
    Am (x02210@1)name="chord_x32010@1">C  GTo (320003@1)let go of

F (133211@1) C (x32010@1)     GIn (320003@1)the mourning I'll rise
         F (133211@1) C (x32010@1)     GIn (320003@1)the mourning I'll let you die
         F (133211@1)C (x32010@1)name="chord_320003@1">G        F (133211@1)C (x32010@1)name="chord_320003@1">G
In the mourning all my worries