The tower is so magical and beautiful at night. About every 15 minutes Rapunzel’s hair lights up purple and the healing incantation song from the movie plays. It only lasts for about 30-45 ...

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 ...