Listen to Koi Kahin online. Koi Kahin is a Hindi language song and is sung by Kamal Haasan, Shankar-Ehsaan-Loy and Nikhil D'souza. Koi Kahin, from the album Vishwaroop (Original Motion Picture Soundtrack), was released in the year 2012. The duration of the song is 4:19. Download Hindi songs online from JioSaavn.