The legal battle over this video of a baby dancing to a Prince song continues By SUDHIN THANAWALA, Associated Press SAN FRANCISCO (AP) — A federal appeals court Monday cleared the way for a trial in a copyright lawsuit over a YouTube video showing a baby dancing to the Prince song "Let's Go Crazy." The lawsuit was filed by the baby's mother, Stephanie Lenz, after Universal Music sent a notice to YouTube demanding the video be taken down for violating the song's copyright.