Listen to Aap Aaye To Ujala Sa Hua online. Aap Aaye To Ujala Sa Hua is a Hindi language song and is sung by Mohammed Rafi and Dattaram. Aap Aaye To Ujala Sa Hua, from the album Ek Din Aadhi Raat, was released in the year 1971. The duration of the song is 3:16. Download Hindi songs online from JioSaavn.