Oh, I'm a huge fan. The soundtrack bits were published before the 2009 movie was, but I kept myself from hearing anything. Good so, as hearing it for the first time in the theatre, just after the very emotional Kelvin sequence (bot me and my wife cried) was insanely intense. Could not resist from thinking it has a slight western-movie undertone when first heard it (well, it's supposed to be a wagon train to the stars, right?)
Again, huge fan.
Sometimes I just browse YouTube to see if any talented fans of the theme come up with good arrangements. There's lot's of it for marching bands, orchestras, violin, piano etc... But there's only one that KICKS ASS:
"Enterprising young guitarist" by Matt Blair
enjoy, as it's worth