South Park season 7 episode 1 soundtrack

The boys are at the bus stop and they seem to be reliving events that they went through 6 seasons earlier; that is Kyle "kicking the baby" his little brother Ike and Cartman talking about his strange dream, which the other boys identify as visitors. What's going on in South Park? Did the boys travel back in time, or is some sinister force at work?

No soundtracks have been added to the show yet