6 8 8 8 8 -8 / 7 7 -6 7 6 / 6 7 7 7 7 -8 8 -8/....

Working on the hypothesis that this is harmonica tab, then the notes on my C harp would be...

G E E E E D / C C A C B / G C C C C D E D/

Chords in C:
I:CEG
ii:DFA
iii:EGB
IV:FAC
V:GBD
vi:ACE
vii*:BDF

So, heres the probable chord progression.

(I)G E E E E D(p) / (IV)C C A C B /(I) G C C C C(V)D E(n) D/

p=Passing tone
n=Neighbor tone

I would need to hear the song to be sure, but that looks about right.

Heres the song in A:

(A)E C# C# C# C# B /(D) A A F# A G# /(A) E A A A A(E) B C# B/

If you could post the whole thing I'd be happy to figure it all out.

-Philibuster, who is most helpful when tired.