 The film was initially launched with the title "36-24-36", before the makers decided to use "Kalvanin Kadhali".Jyothika was the first Choice for the Lead Role but was replaced Nayanthara.The soundtrack was composed by Yuvan Shankar Raja and was released on 29 November 2005 at Albert Theatre, Chennai by actor Kamal Haasan.It features 6 tracks with lyrics written by Na.