RahXephon was ostensibly influenced by the 1975 anime Brave Raideen. But if you've seen Neon Genesis Evangelion, and then this show, you cannot (and I did not) avoid comparing the two. It frankly baffles me that some people see this as a better show than Evangelion, though, because it's not actually about anything. What are the actual themes of RahXephon? Aside from playing lip service to music/sound as a reoccurring element, there's not a whole lot to the show. It's decent, but not transcendent the way Evangelion is.