Coldplay's haunting classic 'The Scientist' is performed by country music legend Willie Nelson for the soundtrack of the short film entitled, "Back to the Start." The film, by film-maker Johnny Kelly, depicts the life of a farmer as he slowly turns his family farm into an industrial animal factory before seeing the errors of his ways and opting for a more sustainable future. Both the film and the soundtrack were commissioned by Chipotle to emphasize the importance of developing a sustainable food system.