Listen to Hai Mubarak Aaj Ka Din online. Hai Mubarak Aaj Ka Din is a Hindi language song and is sung by R.D. Burman, Hariharan, Kavita Krishnamurti Subramaniam and Vanita Mishra. Hai Mubarak Aaj Ka Din, from the album Boxer, was released in the year 1984. The duration of the song is 5:10. Download Hindi songs online from JioSaavn.