Listen to Knock Knock Kaun Hai online. Knock Knock Kaun Hai is a Hindi language song and is sung by Aseem, Vibha Saraf and Sangeet & Siddharth. Knock Knock Kaun Hai, from the album Knock Knock Kaun Hai, was released in the year 2025. The duration of the song is 2:20. Download Hindi songs online from JioSaavn.