What is the ten second theme riff in the ABC Family's Greek opening sequence?

NOT Our Time Now by the Plain White T's, okay, NOT. I mean that very short maybe three chord riff in the opening sequence that shows a shot of a fraternity house with the word 'Greek' superimposed over it. If anyone knows the chords, the tabs, or if it's a clip from a song (which song?), etc, etc, I would really, really appreciate it.