Some have a spiritual background. I write a lot from when my parents got divorced. Breathing was written in the midst of a spiritual search. Any way your music can get out there for people to hear it is a good thing. It's funny you ask.
Classical music is a big influence.
I'm also inspired by classical soundtracks to movie scores. I know that when we started our goal was to write honest, transparent music. If that carries over into what we do, we've achieved our goal. They're both really successful. I respect both those bands very much.