The soundtrack and film score were composed by Ghibran. Kamal Hassan bought musical instruments from Bali, Indonesia for recording a song in a mythical segment in the film because the instruments sounded both Indian and exotic and both Ghibran and Kamal Hassan wanted the music to be creative. According to Ghibran, traditional tunes were mixed with orchestral symphony backgrounds and were fused with Villu Paatu and Theyyam. Ghibran also said that he and Kamal Haasan decided to not use instruments traditionally used in period films such as tabla, ghatam and dholak. The composer further told that Kamal Hassan had sung in three songs and might sing in a few more. In August 2014, Ghibran said that two of the songs would not be featured on the initial release of the album, citing that it would reveal the plot, and that the two songs would be reserved for the film. The Villu Paatu ("Uttaman Introduction") was written and performed by Subbu Arumugam, a prominent Villu Paattu exponent, along with Kamal Haasan. The base of "Iraniyan Naadagam", featured in the film's climax, was koothu "with a dash of atonality" and is built as an exchange between the characters of Hiranyakashipu and Prahlada. As the particular scene had already been shot with actors speaking the lines, Kamal Haasan and Rukmini Ashok Kumar later sang the same lines again on the track. The song "Kadhalaam Kadavul Mun" was based on the Maru Bihag raag. Ghibran had spent a year-and-a-half on the score. 　　The audio rights were acquired by Sony Music India. The official track list was released on 28 February 2015. It was revealed that the soundtrack album will be released with 17 tracks including seven themes from the score. The soundtrack release was held at Chennai Trade Center on 1 March 2015. It was released on an app, instead of conventional CDs. Besides the entire cast and crew, several prominent film personalities including Raj Kiran, Rajkumar Sethupathi, Snehan, Santhana Bharathi, Vikram Prabhu, Keyaar, Dhananjayan, Vijay Shankar, KS Ravikumar, Moulee, SA Chandrasekar, AM Rathnam, Vijay Sethupathi, Sanchita Shetty, Rohini, Madhan Karky, Ponram, Rahman and Fivestar Kathiresan were present at the event, which was hosted by R. Parthiban. 　　The soundtrack received high critical acclaim. Sify rated it 4.5 out of 5 and wrote, "Ghibran has grown leaps and bounds with this album and has indeed delivered his career best...If anyone has any problems in recognizing the effort that has gone into this album, they need to get their musical buds examined. Uttama Villain is an album to be cherished by film buffs and is not for the typical frontbenchers". The Times of India wrote, "Uttama Villain is that rare Tamil film album which doesn't merely push the envelope but has managed to create a new, different envelope". MusicAloud gave it a score of 9 out of 10, calling it "one hell of a soundtrack". BehindWoods gave it 3.75 out of 5 and stated it was "one of its kind gems in Tamil cinema music". Milliblog called it "one of the most daring and inventive musical attempts in recent Tamil cinema history".