In all of the weapon videos, the music starts out as something recognizable as Halo, then jumps into some nasty dubstep. This had better not be how the actual songs are.
Nope, none of these will be featured in-game, they are all on a disc for those only with the Limited Edition Soundtrack.
There are still 15 original normal tracks in-game, no wub wub.
Try giving that link a read.
That’s part of the remixes… I believe it says who it’s by at the end of the Promethean weapons video.
It’s a remix of the Halo OST. If you don’t like the remixes and still want to get the standard Halo 4 soundtrack, then the regular edition is for you.