Listen to O Beqarar Dil online. O Beqarar Dil is a Hindi language song and is sung by Hemant Kumar and Lata Mangeshkar. O Beqarar Dil, from the album Parichay - An Inroduction To India'S Musical Geniuses - Hemant Kumar, was released in the year 2010. The duration of the song is 4:26. Download Hindi songs online from JioSaavn.