We’re living through a golden age of comic book cinema. Superheroes are now more prevalent at your local multiplex than surly staff and that weird all-pervading smell that’s halfway between stale popcorn and ‘warm old shoe’. And though not every caped film that crusades across our screens is a critical victory, most feature music that raises the hairs on the back of your neck and sticks in the mind long after the world’s been saved.