This music is calm and soothing, and would be great to listen to during yoga, before falling asleep, or for some people (myself) excellent while doing homework, because it is 99% instrumental - some songs have vocals. Since it's my fifth recommendation, I'm including 5 music videos (and maybe because I couldn't choose just one). Enjoy!
Even discovery channel loves The Album Leaf:
This one has a cello in it!
Cute video:
Just plain good:
The one I fall asleep to (in a good way):
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