this is a really easy song to play-- all of marcy playground's songs are.
they're all the same four chords: G, Em, C, and D.  this one is just Em, C, and D.

Em
Christopher O' Malley
     D
Went out on a bridge
C
Down in Chehalis
Em
Clutching his bible
      D
And a letter from her
C
Fell into the river

CHORUS:
D               Em
Pity no one was there
   D             Em
No angels in the air
D                     Em
And the morning paper ran
C
One more suicide

Em
His mama stayed
       D
By the riverside
C
Down in Chehalis
Em
And clutching her bible
      D
And a letter from him
C
Fell into crying

CHORUS x2