Suppose you're a pop star. People (well, some people) have been enjoying your music since the 1970s. But you're not just for the grey-haired or balding. It turns out toddlers like your music too. One mother videotapes her toddler dancing to your music, and posts a 29-second clip on YouTube. What's your reaction?
If you're Prince (formerly known as The Artist Formerly Known As Prince), you file a demand, under the DMCA, that YouTube take down the clip. You see, your rights as an artist (even one formerly known as Prince) are being violated if people can hear 29 seconds your music as background to a video of a dancing toddler. "It's simply a matter of principle," says a Universal Music spokesman defending Prince.
The song was "Let's go crazy."