Yeah, I think all art is, at its core, expression of emotions - simple, genuine happiness is one of the hardest to express out of the range. The french impressionists, both in music and in art, probably have that figured out best :)

6/10 It's... special.

https://www.youtube.com/watch?v=zGyThu7EAHQ

Yeah ... I should probably get more into classical, since I've been trying to get into electronic and jazz music recently and they're kind of mood genres too : P 

7/10 - first 50 seconds were amazeballs

Here's a classic Trip Hop song : https://www.youtube.com/watch?v=GAiceRuLX1I

drags a little (as all songs on that album do haha)

Okay, that's nice, enough to hold my attention for 3-4 minutes. However, I don't think there's enough substance in the music to keep it going for 6 and a half

7/10.

Here's Stravinsky's attempt to keep a single theme interesting for 4 minutes:

edit: scratch that, here's a much better version:

https://www.youtube.com/watch?v=0-OBzD5Es4c

Hmmm... 6.5/10

https://www.youtube.com/watch?v=NZWS6CITutY

Hey, pretty good! 8/10

If you have time, here's something a bit more dramatic:

https://www.youtube.com/watch?v=uRr4LqR5qBc

Or something simple and fun, if you don't have time:

https://www.youtube.com/watch?v=4H0VObXXA7U

That's some good stuff. 9/10. Sometimes I turn to classical when i'm deep coding. It's that or the Lord of the Rings soundtrack.

This is what I listen to when going home from work. It's always dark too so it fits the mood:

it's okay , 5/10

https://www.youtube.com/watch?v=oAXrRWLKzko

probably the best anime opening of all time tbh

It'sa 9.5/10 for sure, but not the best one.

Now amount of COME AND SAAAAYVVE MAAYYYAAY can outdo this: 

Ah... The scene's nice, but don't really feel the music there, haha! 6/10

From this, I'd recommend to listen either start-4:19 or 17:24-end, though the whole thing is quite lovely :)

https://www.youtube.com/watch?v=StEykNIoJWg

edit: damnit, got ninja'd... I'd give yours a 8/10