'The Martian' has a killer soundtrack -- here are the 5 best musical moments

(This post contains spoilers about the end of "The Martian.")If you saw "The Martian" over the weekend, which opened No. 1 at the box office with $55 million, you probably didn't expect to leave the theater with "I Will Survive" stuck in your head. And yet that may have happened, as the movie ends on a particularly joyful note and the music matches.