Go to 0:57 in this video, and listen for roughly 10 seconds. I'd recommend doing it with speakers, and not headphones, unless you have like ASTROs.
[video=youtube]https://www.youtube.com/watch?v=8YRJaN9tGhE[/video]
[video=youtube]https://www.youtube.com/watch?v=8YRJaN9tGhE[/video]