Music composer and singer Bappi Lahiri, who popularised Disco music in Indian cinema has turned a year older today. On this special day, watch a rare throwback video of Bappi Da celebrating his birthday with his family and friends. In the video, he also talks about making music for 1982 film 'Namak Halaal'. It is a comedy film written by Kader Khan and directed by Prakash Mehra. The film stars Amitabh Bachchan, Shashi Kapoor, Smita Patil, Parveen Babi and Waheeda Rehman.