When a German has a song in his head that keeps playing and playing, and will not stop, he calls it an Ohrwurm, an earworm. That expresses the problem well.
At the moment I have Lady Gaga's "Bad Romance" running around up top, and it's taking up valuable mental real estate. But there is good reason for its being there.
It brings to mind this earlier classic of dance and song.
It is true, we are living in a golden age of creativity. I can hardly keep up with it.