The filmmaker, who also stars alongside Shabana and Lillete in the movie, says she is having a great time working with the two as they bring to the table something that is beyond anyone's expectations.
"Both of them just accepted the roles without listening to the script. They just says yes. They always have their own inputs. They bring to the characters something you have not anticipated," Aparna told PTI.
"Sonata", based on playwright Mahesh Elkunchwar's production of the same name, deals with mid-life crisis of three characters - Aruna Chaturvedi (professor), Dolon Sen (banker) and Subhadra Parekh (journalist) played by Aparna, Shabana and Lillite respectively.
Talking about acting in her own directorial venture, Aparna, 71, says it was quite a task to manage both the departments.
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"It is very difficult to act and direct at the same time in a film. I don't get the benefit of supervision. It is very difficult to say which I like the more."
Her daughter Konkona Sensharma, a renowned actress, has followed Aparna's steps and turned director. She made her directorial debut last year with critically-acclaimed "A Death In The Gunj".
"She is a good director. Her strength as a director is her ability to see the images in her head. This I understand from the way she describes the scenes.