Listen to Dil Khush Hain Aaj online. Dil Khush Hain Aaj is a Hindi language song and is sung by Madan Mohan and Mohammed Rafi. Dil Khush Hain Aaj, from the album Rafi Sings For Sunil Dutt, was released in the year 1963. The duration of the song is 3:19. Download Hindi songs online from JioSaavn.