I remember Cameron using Aram's ballet suite in his movie, though I wonder how many people recognized it. It's definitely a cool nod to 2001. Classical music and sci-fi are made for each other, I think. Some of my favorite moments in Alien were the use of classical music, like Mozart or Howard Hanson in juxtaposition with Jerry's wonderful score (and his music from Freud). I hope Convenant has a equally diverse and varied musical palette.