After four years of hard work, finally Mumbai-based writer and filmmaker Brahmanand Singh has completed "Pancham Unmixed" - a film on legendary composer R.D. Burman's life and time - and released it on DVD.

"It was in my mind for a long time. I wanted to do something definitive on him. I have tried to explore his music in the film. It was possible only by talking to people who have been around him, worked with him and also by talking to some new composers who have a fantastic interpretation of his music," Singh said.