London. Aayirathil Oruvan languished in production hell due to slow progress of the shoot and the extensive pre- and post-production works, with release dates being postponed for a total of a year. During its release, the film's budget was reported to be crore. However, in August 2021, Selvaraghavan stated that the film's actual budget was crore and they had announced an inflated budget to create hype. Music The film was announced in 2007 with Selvaraghavan's regular music director, Yuvan Shankar Raja, following five successive successful albums together, but after his ouster during filming, work for the soundtrack began again from scratch under new music director G. V. Prakash Kumar. "Adada Vaa", the only song composed by Yuvan Shankar Raja for the film, was removed after his departure and instead used in Sarvam,. As Selvaraghavan had already filmed the visuals for that song, Prakash Kumar had to match the visuals and the choreography. "Un Mela Aasadhan", which he composed as the replacement, was noted for sounding similar to "Adada Vaa". The album was well received. It features ten tunes; six songs, two alternate versions and another two theme songs, with vocals from singers Karthik, Vijay Yesudas, Bombay Jayashri, Nithyasree Mahadevan and P. B. Sreenivas, who made a comeback to playback singing with his song. Moreover, Dhanush and Aishwarya sang for the album along with the composer, Prakash Kumar and Andrea Jeremiah. Lyrics for the songs were written by Vairamuthu, Veturi, Selvaraghavan and Andrea Jeremiah. For a song set in the thirteenth century, research was carried out to find instruments used during that period. A Yaazh, a melodic instrument used in the Sangam Period, and a horn made from animal horns from Bhutan were used. The soundtrack to Aayirathil Oruvan was released on 4 November 2009 at a University Auditorium in Chennai, in a critically praised event. Prominent film personalities across the South Indian film industry attended the launch, which became one of the first films to play live music at the audio launch. It featured live performances from G. V. Prakash Kumar and Andrea Jeremiah for several songs, as well as songs from Dhanush and Aishwarya Dhanush. Furthermore, the night featured a fashion show from Erum Ali, a Kalari performance, Chenda Melam by women from Kerala, a classical dance performance by an actress Poorna and choreographed by Sivashankar. The soundtrack garnered critical acclaim and was considered Prakash Kumar's finest work to