The latest in Variety‘s series of Billion Dollar Composers (so-called because the aggregate box-office of all their movies exceeds $1 billion) is Englishman Henry Jackman, whose music you may know from the last two Captain America movies — but who may be an awards contender for his music for the upcoming The Birth of a Nation. Jackman is a unique blend of highly trained classical composer and former pop/rock producer, and his thoughts on film music in the 21st century are fascinating. During preparation of the main story and this sidebar on eight of his most interesting scores, I also interviewed Captain America directors Anthony and Joe Russo, Birth of a Nation director Nate Parker, Jack Reacher director Ed Zwick and The Interview co-director Seth Rogen (who, predictably, offered the funniest line in either story).