I used a fragment of the song "The Madness of King Scar" from The Lion King musical and did an animated version as a tribute. That song was created for the broadway show based on a scene that was removed from the film. I did it in my free time and took almost 2 years. I used "Toon Boom Harmony" software. The background artist has uploaded some screens of his work, take a look!: http://black-nko.blogspot.com.es/2014/10/backgrounds-madness-of-king-scar.html