to pick that song as his favorite from the album. Karthik and Vijay Yesudas had performed another song in the album, titled "Balle Lakka", which also features vocals of Anusha Dhayanidhi, wife of producer Dayanidhi Azhagiri, debuting as a playback singer. She was persuaded into playback singing by Venkat Prabhu who had seen her performing on her wedding reception and was impressed by her voice. The planned promotional track was excluded from the album in last minute. Earlier reports suggesting that one of the song would feature Yuvan Shankar along with his father Ilaiyaraaja's vocals, and that Andrea Jeremiah had sung another song, turned out to be false. Further Venkat Prabhu disclosed that S. P. Balasubrahmanyam and Shankar Mahadevan were approached to render one number in vain, with the former declining, explaining that the song was too high-pitched for his voice, and the latter being unavailable. The "Machi Open The Bottle..." song and the club mix of "Vilaiyaadu Mankatha" were notably orchestrated by Venkat Prabhu's brother Premji Amaran. The theme music was revealed to be inspired from a song by 50 Cent, with Prabhu and Yuvan Shankar adding that due credits had been given in the film. Besides, Vaali and Gangai Amaran, who usually write lyrics for Venkat Prabhu's films, renowned poet Subramanya Bharathi's great great grandson, Niranjan Bharathi had penned one song ("Nee Naan"), becoming his first work in a feature film. The music rights were sold to Sony Music Entertainment who had reportedly offered 1 crores. Release The release of the soundtrack album was initially scheduled for 1 May 2011, coinciding with Ajith Kumar's birthday, but had to be postponed to mid-May, which too was missed, with the launch being pushed back to June. With the filming getting further delayed and the recording of the remaining songs not being completed yet, the projected release date of June had to be changed as well and Venkat Prabhu announced the new date as 18 July, which however was not approved by producer Dhayanidhi. The master CD was eventually handed over to Sony Music on 22 July 2011, which fixed the release date for 10 August 2011. Since Ajith Kumar informed that he wouldn't attend any promotional events of his films, producer Dhayanidhi Azhagiri dropped the idea of a grand release function. The album was eventually released in a "soft launch" at the Chennai station of Radio Mirchi during the breakfast