Mood: Urgent Listen While Reading: The troubled beginning of most modern Iron Man stories These two have to be taken as a pair. To match the tense, PTSD-driven beginning of the film, the Iron Man theme from the first movie is replaced by this ponderous, heavy-sounding refrain...Mood: Groovy, dude Listen While Reading: The happy ending of most modern Iron Man stories ...a refrain turned completely on its head by the relatively lighthearted end of the picture.