I wish we had more talent like this girl in this season, what she is singing impromptu in this interview can't be achieved by most of the females from the current crop on stage.
http://www.youtube.com/watch?v=LqB47guNukY&feature=related
Compare this with the original version she doesn't need to change scale or any thing:
http://www.youtube.com/watch?v=mFlkonfiQrQ&feature=related
In the film what has bothered me is that this song is based on Bilaskhani Todi which is hymn of melancholy, but the mood of the dance doesn't go accordingly. Is this the raag used to base Mahalya composition on ?(sung at the break of morning on Prathma day of Durga Puja), just goes on to prove how deeply religion and music are woven together.