What is the name if the popular 80's song that starts with a slow organ and then starts a keyboard riff?

The song starts off slow with an organ part, it sound a lot like the organ part of this song; a href="http://www.youtube.com/watch?v=haH3WSe1qtI" rel="nofollow"http://www.youtube.com/watch?v=haH3WSe1q…/a . Then a popular keyboard/synthesizer riff comes in. The riff is something like "nah nah nah nah, nah nah nah nah nah nah. I know that isn't very helpful but I believe the keyboard riff is a fairly high tone. Thanks.