Movies and songs are part of culture. Entertainment is culture.
I met a guy from Bangladesh while travelling in France and even though we both spoke english fluently, he addressed me many times in hindi.
One of my american friends asked me if hindi could be called a language of Indian sub-continent just like english is considered international language.
This sums it all.
My recent observation is, the entire nation of Nepal, politically, socially, culturally is in degradation. It is not evolution or mutation, just plain simple degradation.