whats the name of the song playing in the The Voice commercial called ?

It's like a piano song but i can't find the commercial to show you ! I
just know that it's a piano song no one is singing JUST PIANO !

Or if you dont know that one what about this one
.....http://www.youtube.com/watch?v=HdLtWVy1DQI

Or the Good Luck Charlie commercial where charlie throws away her
laptop where theres like piano song ! please if you know tell me the
name its cause i want to learn it in the piano !!