Countdown

Countdown is a screamer video uploaded to YouTube on April 27, 2009 by Steven Anderson.

The video is a timer, counting down from 60. After 30 seconds, the theme song from the American gameshow ''[https://en.wikipedia.org/wiki/Jeopardy! Jeopardy]'' plays. When the timer runs out, the screen will begin to flash and a buzzing alarm sound will play for 2 seconds, at which point a picture of Regan MacNeil from The Exorcist will appear with a generic, normal-volume female scream.

Link
NOTE : The following video contains a screamer!
 * youtube.com/watch?v=9-N2N9QquSM