as Koyambedu water tank for three days, for which an Akila crane was used. Further filming, including the climax, was held at various locations in Europe, Andamans and Coimbatore. Filming was wrapped-up in October with a song featuring Vijay and Ileana, which was choreographed by Farah Khan. The filming process lasted for eight months. Shankar wanted to paint a train for the song sequence, so the team decided to stick paper and then paste the painting on it. Art director Muthuraj hired some 250 artists from various states who were well versed in folk drawings and finished the entire job at breakneck speed and returned the train in time. Themes and influences The film is a remake of Rajkumar Hirani's 3 Idiots (2009), which itself was adapted from the novel Five Point Someone – What not to do at IIT! by Chetan Bhagat. The film deals with the theme that one shouldn't run behind success and rather pursue his/her own interests. If one develops the right skill anything is possible. According to Gauthaman Bhaskaran of Hindustan Times, "Nanban's message is profound [..] given India's exploitative and unimaginative education system. The film lambasts bookishness, the mad chase for marks, [..] the joy of discovering. Parental and peer pressure and the frightfully huge fees for professional courses push boys and girls into performing puppets. The higher your grades, the closer you are to securing a centum, the brighter become your chances of making it in life". The film shows characters having various interests. The character Pari is against the educational system and insists his classmates not to run behind grades rather derive pleasure by understanding and assimilating things while his principal Virumandi Sandhanam aka Virus (Sathyaraj) wants students to become a book worm to excel in academics. Venkat is interested in wildlife photography but his parents compel him to study engineering. Senthil hails from a poor family and is compelled to study a professional course only to bail out his family from all troubles. The film also uses real inventions by little-known people in India's backyards. The brains behind the innovations were Remya Jose, a student from Kerala, who created the exercise-bicycle/washing-machine; Mohammad Idris, a barber from Meerut district in Uttar Pradesh, who invented a bicycle-powered horse clipper; and Jahangir Painter, a painter from Maharashtra, who made the scooter-powered flour mill which was featured in the original Hindi film. Music The soundtrack