PK's music is contributed by Shantanu Moitra, who had regularly collaborated with Hirani since Lage Raho Munna Bhai (2006) and 3 Idiots (2009).[1] Moitra composed four tracks including a theme music, while Ajay–Atul and Ankit Tiwari contributed one track each.[2] According to Moitra, all of his compositions in the film were "quirky" and "melodious".[2]
The track "Nanga Punga Dost" was conceptualized even before the first look poster, which Aamir posing nude with a strategically placed vintage boombox.[3] The track was particularly based on the aforementioned sequence, which Moitra described it as "amazing, crazy and wild".[2] The track had two different lyrics, the first verse was featured in the introductory scene of Anushka Sharma, while the original version of the song was used in the end credits.[citation needed]
"Tharki Chokro" was the first single to be released from the album on 24 October 2014.[6] It was preceded at an event held at Delhi, with the presence of Khan, Hirani, Ajay–Atul.[7][8] The second song "Love Is a Waste of Time" was released on 31 October 2014.[9][10] The music videos for "Nanga Punga Dost" and "Chaar Kadam" were released on 1 and 2 November, respectively,[11][12] whereas the full-length versions of those songs released along with the album on 5 November 2014.[13]
Rajiv Vijayakar of Bollywood Hungama described it as a "competent and neat album" from Hirani–Moitra collaboration.[14]
Devesh Sharma of Filmfare in a three-and-a-half-star review said that "Chaar Kadam and Tharki chokro are your takeaways from this largely situational album."[15] Critic based at The Indian Express complimented the music being a "refreshing change compared to the rap and hip hop beats we hear today."[16] Joginder Tuteja of Rediff.com wrote "PK's music starts and ends well, but the middle portion is barely passable" and gave two stars to the album.[17] Swapnil Raje of IBNLive wrote "PK is a score that has its moments but it's not the score of the year."[18]
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