Listen to Aaj Kun Mera Dil online. Aaj Kun Mera Dil is a Hindi language song and is sung by Tia Bajpai and Chandra-Surya. Aaj Kun Mera Dil, from the album Best Of Tia Bajpai, was released in the year 2016. The duration of the song is 4:58. Download Hindi songs online from JioSaavn.