Bollywood is India’s Mumbai-based billion-dollar film industry. Most Bollywood films are lavish, epic musicals, full of lavish,epic musical production numbers. Though the industry is massive today — yesterday we met composer A.R. Rahman who is one of Bollywood’s current great hopes — we can never go wrong with starting our Bollywood exploration with the classics. There is no film more classic than the 1957 “Naya Daur,” an “old India” vs. “new India” exul of song and dance. ENJOY.