More mellow/beautiful like this one:

 

Hmmm... a quick example, which you might already know is Yiruma.

Also one of the 2CAudio's developers, Andrew Souter:

http://soundcloud.com/andrew_souter/andrew-souter-reaching-for

He's a great piano player and he crafted A LOT of mello piano melodies which you can download from itunes (as albums as well) which deserves every peny. Makes me chill everytime and if you would play them in the middle of the night when there's a huge silence around, you'll feel magical listening to it.