David Guetta played it at the cocoon club in frankfurt on the 30 th april 2009!
Here is the video the song beginns at 1:10
He also played it here : http://www.youtube.com/watch?v=DISf7yyKXN0
I guess it's [Ex] da Bass & Ian Brearley - Riga Nights . 
I Gotta Feeling-Black Eyed Peas