The artist is sufjan stevens. and the song is called:
"They Are Night Zombies!! They Are Neighbors!! They Have Come Back From the Dead!! Ahhhh!"
and im not joking, thats the actual title.
The trailer for the new hypoxic films release (actually im not sure if they plan on finishing it or not) "three rows past fiction" also has a sufjan song that is pretty rad. Its called:
"Concerning the UFO sighting near Highland, Illinois"
both songs are from his album "Illinoise".