I just ripped the entire Halo 4 soundtrack to a more portable format from the GIANT uncompressed files. Right now it's about 100 tracks of stuff. Obviously the OST will be way less than that, given variants and vignettes. We have an opportunity to work with some VERY amazing electronic musicians and one or two vocalists to do a second disc of remixes the OST disc would be 'pure' to avoid breaking any Benjamins. But I think it would be pretty badass.
But goddamn does Neil Davidge have good taste in 'instruments.' there are some sounds in this that I just can't stop getting goosebumps from. Especially given the fictional context for some of these moments.
We listen to these tracks on Mackie studio monitors and the amount of detail is absolutely insane. When I think about these getting jammed through stereo speakers on a TV (including mine in one room) I sob a little.