Listen to O Dildar Bolo Ek Baar online. O Dildar Bolo Ek Baar is a Hindi language song and is sung by Lata Mangeshkar and Talat Mahmood. O Dildar Bolo Ek Baar, from the album School Master, was released in the year 1959. The duration of the song is 3:36. Download Hindi songs online from JioSaavn.