Even though it is being promoted as a supernatural thriller, the makers of 'Ek Thi daayan' released the first song- a romantic track- on Youtube recently. The song features Kalki Koechlin serenading Emraan Hashmi while strumming the guitar and singing 'Yaaram'. The song also features Huma Qureshi. Composed by Vishal Bhardwaj, the lyrics have been penned by Gulzar and song has been sung by Sunidhi Chauhan. The film, which also features Konkona Sen Sharma, has been co- produced by Ekta Kapoor and Vishal Bhardwaj and has been directed by Kannan Iyer.