In 1983, Nena soared to worldwide fame with her song "99 Luftballons" - or "99 Red Balloons" in its English version. She went on to sell about 25 million albums over her career. Her new studio release, "Oldschool," includes a song produced by big-name rapper Sammy Deluxe, and offers a wry take on getting older as a pop star. In any case, Nena doesn't seem to have missed a beat.