It's always intriguing when a seemingly impossible task is accomplished. Inspiring too. "Philadelphia Freedom", the 1975 single by Elton John and Bernie Taupin, written at the request of tennis star and friend Billie Jean King, has always struck me as a good example. The task at hand was to write a song for a tennis team (!) with an unsubtle name (to say the least), while incorporating the sound of the r&b for which the city was famous - all without being corny. And they did it. First of all, it's not about tennis, but so what, because it sounds like it could be. Second, its lyrics are ambiguous enough to be about whatever the listener wants (like freedom itself, I guess). Third, the music speaks for itself: http://www.youtube.com/watch?v=iXbsNw1spWA.