Well the Bombay film wasn't always like how it is now. It did have a local industry. There were realistic films made on local scenes. But it gradually changed over the years.
What is attempted in these film is of course a synthesis. But it can be seen by someone who has his feet in both cultures. Someone who will bring to bear on the films involvement and detachment in equal measure.
The only solutions that are ever worth anything are the solutions that people find themselves.
The director is the only person who knows what the film is about.
The conception of background music is changing. You use less and less of it these days.
Sometimes a director is making three films. Perhaps he is shooting a film in Madras and a film in Bombay and he can't leave Madras as some shooting has to be done, so he directs by telephone. The shooting takes place. On schedule.