Listen to Un Par Kaun Kare Vishwas online. Un Par Kaun Kare Vishwas is a Hindi language song and is sung by Lata Mangeshkar and Mohammed Rafi. Un Par Kaun Kare Vishwas, from the album Kavi Kalidas, was released in the year 1959. The duration of the song is 3:29. Download Hindi songs online from JioSaavn.