Thing is, I dunno the name of this certain theme. It’s from Halo 2, it’s not the main theme "Halo Theme Mjolnir Mix", but it sounds like it’s a part of the song without the instruments in it. All it just is is the guy in the background singing opera or something. It’s when the huge title "HALO 2 (actually just "2")" and it says "Press START". That theme. It also continues throughout while you set your characters up for Mulitplayer.
Know which song I’m talking about?
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Oh yes hmm.. it’s not on gh anymore… well just wait till someone want to upload the OST on the forum.