Raja Hasan 's father , Rafiq Sagar has been a playback singer himself .
Raja Hasan 's father , Rafiq Sagar has sung a ghazal for a Bappi Lahiri composition in the 1980 film Pyaara Dushman .
Raja Hasan 's father , Rafiq Sagar has been a playback singer himself and has sung a ghazal for a Bappi Lahiri composition in the 1980 film Pyaara Dushman .