Kochadaiiyaan is the soundtrack album composed by A. R. Rahman to the motion capture animated Tamil film of the same name directed by Soundarya R. Ashwin.

On 20 December 2012, lyricist Vairamuthu unveiled the Tamil lyrics of the melancholic song "Idhayam" (introduced as "Senthee Vizhuntha Sempor Paarayil" in 2012) through his official Twitter account.

[21][22] In an interview with The Hindu, he stated that it contains 2,100-year-old Tamil words in pure form with dialects of the Sangam age, planking imagery and epithets in verses.

[23] The song "Mannapenin Sathiyam" revolves around a wedding situation in the film; talks about the promise of a husband to his wife and vice versa.

[24] At the audio listening session of the soundtrack, lyricist Vairamuthu stated that he and Rahman had shortlisted the lyrics of songs from over hundred verses, relevant in today's times, not bounded by terms of usual style, structure or syntax.

Four songs from the film namely "Medhuvagathaan", "Manapennin Sathiyam", "Karma Veeran" and "Maattram Onnrudhaan Maaraathadhu" were played at the event.

[13] A day prior to the music launch, audio teasers of the songs were released on MediaOne Global Entertainment's official SoundCloud channel.

[26] The video track of "Thaandav" from the motion picture was released on 25 April 2014 as well as an online contest titled "Rajini Thandav" was held.

"[35] Bodrul Chaudhury for Bollyspice stated that he was somewhat disappointed with the music to Kochadaiiyaan, lacking in the essences of a typical A. R. Rahman album.

"[36] Sakhayan Ghosh for The Indian Express writes, "A Hindi version can never substitute the ethos of the original – conceived in a language that dictates the way lyrics, music and phonetics come together.

[37] At Koimoi, awarding 3.5 stars (out of 5) the critic wrote, "The drama, Kochadaiiyaan, with its warfare nuances, correctly settled for a powerful theme for the entire music album.

"[38] Priya Adivarekar of India's The Financial Express commented that the Kochadaiiyaan album has "its share of highs and lows, but it is definitely worth a hear!".

[39] Further, she presented the summary of the album quoting, "Kochadaiiyaan is a far cry from what we have heard in films like Sivaji: The Boss and Endhiran (Robot).

[41] M. Suganth of The Times of India said, "The energetic background score compensate for the blemishes in the film"[42] Critic Komal Nahta through is official publishing summarized, "A.R.

"[43] Critical review board of Behindwoods praised the score, "A.R.Rahman is among the main pillars bolstering Kochadaiiyaan and he even does the honors of introducing the movie's milieu and characters in the beginning.

[49] At Koimoi, critic Manohar Basu gave a verdict, "A.R Rahman's background score as well as the film's music try to resurrect a lofty picture.

[55] The track "Engae Pogudho Vaanam", sung by S. P. Balasubrahmanyam was released on 7 October 2013 as a single, along with its Telugu version "Choodham Aakasam Antham" to positive response;[56] it was first aired on Radio Mirchi in Chennai the same day.