when Suigetsu has the Yotsuki clan ninja in a headlock and Sasuke uses his Mangekyo Sharingan on him, what is the song you can hear in the backround. the cool electric guitar. it can also be heard when Sasuke intrudes Narutos mind and meets the Nine Tails for the first time inside Naruto. right before Sasuke supresses the foxes power, the tune starts playing. its dark and im quite curious as to what this song is. if anyone can help me it would be greatly appreciated