This is the little thing that Horatio plays through the whole thing.

e|--5-5-5-3--3-0-0-3-3-3----5-5-3-3--0--3---------------|
B|------------------------------------------------------|
G|------------------------------------------------------|
D|------------------------------------------------------|
A|------------------------------------------------------|
E|------------------------------------------------------|

Kinda accurate.  You could do it in a different key too I guess if this doesn't sound 100% right.