Listen to Kya Pata Hai Tujhko Kab online. Kya Pata Hai Tujhko Kab is a Hindi language song and is sung by Tarun Toofani. Kya Pata Hai Tujhko Kab, from the album Hawayen, was released in the year 2017. The duration of the song is 5:05. Download Hindi songs online from JioSaavn.