It couldn`t have been easier...
Verse:
Gm F Gm
Go son, go down to the water
Gm F Gm
And see the women weeping there.... cont. sim.
Chorus:
F Gm F Gm
This is a weeping song, a song in which to weep
F Gm
while all the men and women sleep
F Gm F Gm
This is a weeping song, but I won`t be weeping long.
That`s about it!