: It is an undisputed popular term for erotic cinema, largely because of the blue tint found on low-budget pornographic film prints developed in amateur labs. Censorship Context
Actual “blue films” in India during the classic cinema era (1940s–1980s) were from Europe or the Middle East. They were never legally produced or distributed. In the 1990s, with VHS and later digital, a grey market emerged, but these are not part of Hindi classic cinema . Blue Film In Hindi Chamiya
These songs were the "pillars" of the classic Hindi blue film. You listened to them on a two-in-one tape recorder with your headphones, praying your parents didn't ask what you were listening to. : It is an undisputed popular term for