Megastar Amitabh Bachchan on Thursday mourned the death of Bappi Lahiri and said the songs the singer-composer gave for his films are remembered with joy even after decades. The 69-year-old musician, who passed away at a city hospital on Tuesday night, had composed several chartbusters for Bachchan for films like "Namak Halaal" (1982) and "Sharaabi" (1984).