Had the main menu music on in the background while I was doing some chores around the house, and I got a distinct feeling I'd heard that theme somewhere else.

What do you think? Tell me I'm not crazy?

It's actually very different, it just uses the same basic instruments and a similar tone, the actual notes are nothing alike.

But, yes, they are similar in tone.

Kinda, yeah. You get that with atmospheric music, though.