Listen to Tumsa Nahin Dekha online. Tumsa Nahin Dekha is a Hindi language song and is sung by O. P. Nayyar and Mohammed Rafi. Tumsa Nahin Dekha, from the album Rafi - Sings For Shammi Kapoor, was released in the year 1957. The duration of the song is 3:31. Download Hindi songs online from JioSaavn.