Step Up 2 the Streets Trailer song

Hey does anyone know the song in the Step up Two the streetsTrailer at the end of the Trailer that goes on for about 20 seconds?
Thanks I really appriciate it!

those last 20 secs sounds like:
Shirley Ellis - Clapping Song
here's the song: http://www.youtube.com/watch?v=Ok-nu...eature=related
It seems to be some kind of remix of this oldie? The oldie itself sounds like this in original: http://www.youtube.com/watch?v=YkDrrdPUIPM

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And the very last verse "Ladies and Gentlemen" in the last few seconds of this trailer comes from another song, this one here: http://www.kovideo.net/music/video/T...urch/2172.html

can sum1 plzz tell me all the songz namez which were played in da movie