It's probably going to be difficult seeming that the companies that produce the music dont release it to the generall public. But I suppose you could try searching in Google or YouTube these titles:
With an iron fist - Immediate Music
Invictus - X Ray Dog
Ascend and Conquer - X Ray Dog
Mein Herz Brennt - Rammstein
Protectors of the Earth - Two Steps from Hell
Two Steps From Hell "Protectors of the Earth" -> www.twostepsfromhell.com
torrent
my declaration
hi, i don't know witch trailer did you watch, but here are all music i know: "With an Iron Fist" - Immediate Music "Invictus" - X-Ray Dog "Ascend and Conquer" - X-Ray Dog "Mein Herz Brennt " - Rammstein "Protectors of the earth" - Two Steps From Hell and maybe you should check this page: www.soundtrack.net/trailers it is a good place to find trailer music
You can not download movie clip for your own trailer
Residual Energy of the Broken Hearted by the VCs (only available as a download)
search google with Download twilight Trailer
I too was looking for this piece. I emailed Buena Vista Home Entertainment and they actually responded to my email! Unfortunately, this was their response..... :( "The music on the Becoming Jane website and trailer was created for the website/trailer. Unfortunately it is not available on a soundtrack or for download."
lavakushi
the music for the 2nd or 3rd trailer is down the rabbit hole. by Murray gold.
There Isn't A Trailer You Probably Saw A Fan Made Trailer
yes
YOUTUBE