A good interview (partial) with Henry Jackman, the composer, for HEY U GUYS:
You need a sort of perfect storm of circumstances to allow something radical to work in a film where you’re not just being self-conscious, where you’re not just trying to show off or whatever, and this [Captain America] was it. I can’t say too much because I know Marvel will shoot me, but Captain America: The Winter Soldier is a brilliant film that is part of the Marvel franchise but the directors John and Anthony Russo are geniuses. It’s a Marvel film that’s taking it one step further. They’ve made Captain America much more contemporary. The story is set in 2013, so it’s not a period film and it doesn’t have Indiana Jones style Nazis running around the place, it’s all set in the modern era and it’s a cross between a superhero and a modern political thriller so that’s already awesome”.
So much more at the link!