Continuity mistake: When Natalie is in the car, she is unaware that tied to the back is rope which is also hanging Damon from the tree. When she reverses, this causes him to crash into the windshield. However between shots the way he is falling and the way he lands is inconsistent. (00:29:55)
Continuity mistake: In the opening scene with Michelle driving, there is a wide shot of the dash board, and you can see the pointer is on fifty-eight mph. Then in the next close up of the low fuel signal, the pointer is no longer there. (00:03:05)
Continuity mistake: When Natalie and Brenda are walking across campus and come across the stall with Paul's newspapers, Natalie picks up one of them. Between shots, the way she holds it open changes from holding it in the middle, to the top. (00:19:40)
Continuity mistake: Inside the radio station tower, Sasha is just being introduced to a new speaker calling in. The equipment assistant holds up a card saying 'Felicia' for Sasha, with his left hand. In the next shot it is in his right. (00:08:25)
Continuity mistake: When Michelle gets back into her car after escaping the gas station attendant, as she drives following the moments up to when she is decapitated in her car, her wet fringe keeps on changing position between shots. (00:07:25)
Continuity mistake: When the gas station attendant fills up Michelle Mancini's car, he is looking at her. The next shot shows that he's looking at her back seat.
Continuity mistake: Brenda is showing Natalie a slideshow using a projector to show her how her boyfriend was killed; she firstly shows a photo, then a newspaper article. The article is left projected for the whole scene. That is until Brenda is shot out of the window, and now it is the photo that is back to being projected. (01:22:20 - 01:28:45)
Chosen answer: The song is 'Love Rollercoaster' by the Ohio Players. All the details on this story can be found at Snopes website http://www.snopes.com/music/hidden/roller.htm.
Xofer