First, The Hoff (who’s big in Germany) appears in this ad that promotes the German side.
Now, here’s Shakira extolling the goodness of yogurt in her World Cup commercial.
This doesn’t really involve music, but it”s a good ad for an airline called Germanwings. (Thanks to Steve for this.)
And finally, Mario Goetz, the guy who scored the winner in the final, has a model/singer girlfriend who works under the name Trina B. Here’s one of her singles.