Song in Prometheus Trailer???

hey all, i wanted to know the name of the song in the first main trailer (domestic trailer) that was released on saturday. its got drums, piano & a choir in the background. i tried Gazelle Twin, b/c i remember there being a topic about her song being selected off the album - Entire City, but it was only selected for a promo. i still checked the songs though on amazon & had no luck, any help would be much appreciated, cheers.