The soundtrack team will remake the original's soundtrack (composed by Martin O'Donnell and Michael Salvatori) note for note, but with a newly recorded orchestral and vocal arrangement.
“It was a huge undertaking to transcribe, orchestrate, and produce every note from the original game soundtrack files” said Paul Lipson, Pyramind Studios COO/audio director. “Our team approached every aspect of the music with an immense amount of skill and care, keeping the core Halo sound while updating the production to today’s highest standards."
{Source: GameInformer}