Surprise surprise having heard the track I think Marcs take was right. It sounds like the guitar plays an E or E7. It's easiest to hear in the instrumental round about 2.32. It could be something like

E╓───────3───────4─┬
B╟─────3───────5───┼
G╟───4───────4─────┼
D╟─5───────6───────┼
A╟─────────────────┼
E╙─────────────────┴

. .1 + 2 + 3 + 4 +

Does that sound like it to you?