From the XBLA videogame Bastion by Supergiant games.

Soundtrack available here. http://login.ign.com/prime/promos/bastion/?utm_campaign=twposts&utm_source=twitter

LYRICS:
I dig my hole you build a wall
I dig my hole you build a wall
One day that wall is gonna fall

Gon’ build that city on a hill
Gon’ build that city on a hill
Some day those tears are gonna spill

So build that wall and build it strong cause
We’ll be there before too long

Gon’ build that wall up to the sky
Gon’ build that wall up to the sky
Some day your bird is gonna fly

Gon’ build that wall until it’s done
Gon’ build that wall until it’s done
But now you’ve got nowhere to run

So build that wall and build it strong cause
We’ll be there before too long