“Tangled,” which is based on the Brothers Grimm fairy tale, “Rapunzel,” was already in active development ... The film eventually debuted in March through a series of tightly controlled red carpet ...

Following is a transcript of the video. Narrator: If you peel back the layers of Rapunzel's hair in "Tangled," you'll see just how complicated animating 3D hair can be. But back then, Disney had ...