Halo Theme MJOLNIR Mix
From Halopedia, the Halo wiki
Halo Theme MJOLNIR Mix is the first track in Halo 2: Original Soundtrack, Volume 1. The piece is a remix of the original Halo Theme, comprising of two electric guitars (a lead guitar on the left side and a rhythm guitar on the right side) accompaniment by Steve Vai.
The soundtrack can be heard in Halo 2: