Listen to O Mera Dil Hai Bada online. O Mera Dil Hai Bada is a Hindi language song and is sung by Kumar Sanu. O Mera Dil Hai Bada, from the album One & Only Himesh Reshammiya, was released in the year 2020. The duration of the song is 5:06. Download Hindi songs online from JioSaavn.