Vikram Vedha (soundtrack)

Sam composed the score based on the script instead of doing it after watching the film's final version. He used the same approach for Puriyatha Puthir. He believed this would give him more creative freedom while also helping the actors and directors understand how to depict the emotions the characters portray in a particular sequence.^[3][4] In an interview with Kaushik LM of The Hindu, Sam said he "used ethnic Indian instruments, and live orchestra" to compose the score.^[5] He completed 80 percent of the score before the commencement of principal photography, leading Pushkar and Gayathri to shoot the scenes according to the music he composed. After shooting for the film ended, Sam fine-tuned the score to achieve better results.^[3][6]

Pushkar and Gayathri had initially opted against including songs in the film, but then thought lyrics might work better than music alone and changed their decision.^[4] Sam employed the vocal percussion technique of beatboxing for the track "Tasakku Tasakku" as he felt it would be better to use "real sounds" to depict the atmosphere in a bar.^[5] At Sethupathi's insistence, Vignesh Shivan was hired to write the lyrics for "Karuppu Vellai".^[7]

The audio rights of the soundtrack album were acquired by Think Music. The team released the first single "Tasakku Tasakku" on 5 June 2017, rendered by Mukesh, M. L. R. Karthikeyan, Sam C. S. and Gana Guna.^[8][9] Followed by the second single track, "Yaanji" on 12 June 2017, which is a melodius composition rendered by Anirudh Ravichander and Shakthisree Gopalan, with lyrics written by Mohan Rajan.^[10][11] The entire soundtrack album was unveiled through all streaming platforms on 19 June 2017.^[12][13]

The original background score from the film, composed by Sam C. S. was released on 14 December 2017.^[14] It features 10 bonus original compositions, with six cues in the film (tracks 11–16) which were included in the film's soundtrack album.^[14]

Sharanya CR from The Times of India noted in her review that Sam "brings out the essence of the film’s plot" with "Karuppu Vellai", and used the term "stylish, yet flawless" to describe Anirudh's and Shakthisree Gopalan's rendition of "Yaanji". She felt "Pogatha Yennavittu" was "an impressive composition" and appreciated the "very peppy" beats in "Tasakku Tasakku", adding that it "can be reserved for parties". Sharanya concluded her review by stating that "the composer hits the high-note" with Vikram Vedha, writing further that "the film's narrative is sure to up the experience through music" with the instrumental tracks.^[15]

Vipin Nair of Music Aloud rated the album 3.5 out of 5, calling it an "excellent work" from Sam CS.^[16] Karthik Srinivasan of Milliblog wrote "After the unheard, under-rated, Sam hits the big league with Vikram Vedha".^[17] Priyanka Thirumurthy of The News Minute wrote "While the songs in the film don't really make an impression, music director Sam C.S stuns the audience with background scores that keep you hooked even when the screenplay dips."^[18] Anupama Subramanian of Deccan Chronicle wrote "Sam CS’ music, especially the background score is brilliant."^[19] Sreedhar Pillai of Firstpost described it as "great music and background score by Sam CS."^[20] Reviewer based at Sify wrote "Sam CS' score is undoubtedly the film's lifeline, his background score enhances each and every scene, particularly in the tense moments."^[21]

Baradwaj Rangan of Film Companion South added, "The music, though, takes itself very seriously. CS Sam produces a good album (Nee pogaadhey is just lovely), but his score is deafening, and it drowns out a lot of the dialogue."^[22] Ragesh Gopinathan from Malayala Manorama called Vikram Vedha as "one of those few films whose BGM thrills you so much that it reverberates in your ears even after the show ends."^[23] Vishal Menon of The Hindu described it as a "spellbinding soundtrack".^[24]