I have to begin by saying that the previous reviewer mentioning Creed and Nickelback has to be joking. That can't be a serious review. In addition, Explosions in the Sky is from Texas. In fact, three of the band's members are actually from the Midland/Odessa area where the film is set (which is, in part, why they were asked to score the film). Put that in your pipe and smoke it.
Now, the music. I'll be fair and say I haven't seen the film yet, so I have to review the music based solely on its quality. On that front, it's pretty good.
For Explosions in the Sky fans, there is, disappointingly, none of the group's trademark loud/soft dynamics, and a lot of the drumming is buried in the mix or non-existent. So, if you're looking for this to smack you with some distortion or volume like one of the previous EITS records, you're not going to get that. What you will get is a wonderful version of "Your Hand in Mine." And, just like the title suggests, it has strings. The other songs fall toward the band's more melodic work and are often backed by strings.
It's peaceful, quiet listening that really does sound like Texas - spacious but intimate, complex, dusty, bright, sad and hopeful. For counterpoint, listen to the Daniel Lanois track "Sonho Dourado," which sounds like what people think Texas sounds like. It's a fine song, but it's all surface.
If you're a fan of Explosions in the Sky's previous work; if you like post rock; if you like quiet music with some angular, arpeggiating, bright guitar work; if you love the beauty of twilight; if you believe in the sound of Texas - pick this up.