invested heavily in motion capture technology, with the dance scenes acted out by human dancers. The tap-dancing for Mumble in particular was provided by Savion Glover who was also co-choreographer for the dance sequences. The dancers went through "Penguin School" to learn how to move like a penguin, and also wore head apparatus to mimic a penguin's beak. Happy Feet needed an enormous group of computers, and Animal Logic worked with IBM to build a server farm with sufficient processing potential. The film took four years to make. Ben Gunsberger, Lighting Supervisor and VFX Department Supervisor, says this was partly because they needed to build new infrastructure and tools. The server farm used IBM BladeCenter framework and BladeCenter HS20 blade servers, which are extremely dense separate computer units each with two Intel Xeon processors. Rendering took up 17 million CPU hours over a nine-month period. According to Miller, the environmental message was not a major part of the original script, but "In Australia, we're very, very aware of the ozone hole," he said, "and Antarctica is literally the canary in the coal mine for this stuff. So it sort of had to go in that direction." This influence led to a film with a more environmental tone. Miller said, "You can't tell a story about Antarctica and the penguins without giving that dimension." The film was dedicated to the memory of Nick Enright, Michael Jonson, Robby McNeilly Green, and Steve Irwin. Music Happy Feet is a jukebox musical, taking previously recorded songs and working them into the film's soundtrack to fit with the mood of the scene or character. Two soundtrack albums were released for the film; one containing songs from and inspired by the film, and another featuring John Powell's instrumental score. They were released on 31 October 2006 and 19 December 2006, respectively. Prince's "Song of the Heart" won the Golden Globe Award for Best Original Song. The film won Golden Trailer Award for Best Music. The song was written by Prince specifically for Happy Feet shortly after he was given a private screening of the film in order to gain his approval for the use of his song "Kiss" in a musical number. Prince enjoyed the film, gave his approval for the use of "Kiss" and offered to write an original song for the production, which he completed a week later. Soundtrack Happy Feet: Music from the