What are some good, serious but not quite sad instrumental songs?

I'm not talking about piano type stuff, like mozart or whoever, but actual instrumental type stuff. For instance a href="http://www.youtube.com/watch?v=nvsI6wPSwLQ&a=c2N5TGkQ3TE&playnext_from=ML&playnext=1" rel="nofollow"http://www.youtube.com/watch?v=nvsI6wPSw…/a is amazing, but the vocals are slightly annoying. What are some good non-vocal songs like that? Thank you!