Listen to Ek Tha Rajaek Thi Rani online. Ek Tha Rajaek Thi Rani is a Hindi language song and is sung by Lata Mangeshkar and Mohammed Rafi. Ek Tha Rajaek Thi Rani, from the album Yeh Kaisa Insaf, was released in the year 1980. The duration of the song is 3:17. Download Hindi songs online from JioSaavn.