An extended sample of a song from the forthcoming Daft Punk-produced movie soundtrack to Tron: Legacy has emerged online.

The 90-second clip of 'The Game Has Changed' can be heard below now.

It is the longest sample yet of a song from the movie sequel, which is due to be released on December 17.

Daft Punk created the much-anticipated score alongside the film's director Joseph Kosinski, who said it marked a "new direction" for the French duo.

It will be released on December 7 on CD, a deluxe edition and digital download. A video game, Tron: Evolution, is also due out the same day.

Tron Legacy is the sequel to 1982's Tron, and stars Jeff Bridges and Olivia Wilde.

(by Jason Gregory)