Muthukumar and performed by Haricharan and Tanvi Shah, was released as part of the soundtrack album of the film on 12 February 2010.
The song, along with its entire soundtrack album, has received highly positive reviews from music critics, achieving commercial success, staying for over 8 months in the charts.
[4] Composer Yuvan Shankar Raja said, that the tune of this song came "immediately to his mind", when director N. Linguswamy was explaining the situation about the film's protagonist falling in love at first sight.
He further more, revealed that he had developed this tune even some years earlier, when he saw a "beautiful girl", while driving in rain.
However, he was too shy to express his feelings and instead developed a tune in his mind, which he and Linguswamy decided to reuse for this song.