Help me with this song!!!!!?

Recently I heard a song on the radio, on this dance station, and I remembered that I had heard it when I was younger. It went: dum-dum (and then dum faster). Then there was some guy rapping (totally ruined everything). It was a girl singing the dum parts, but after that she used to say: That's the way....... Put your hands in the air (or something like that). Song and group name???