Atrangi Re marked the second collaboration of Dhanush with director Aanand L. Rai after which film?

This 2015 film directed by R. Balki starred Amitabh Bachchan and Dhanush in which Bachchan's provides the voice for the character portrayed by Dhanush. Name the film, a play on their names.

The viral song "Why This Kolaveri Di" sung by Dhanush is featured in the 2012 film 3. Name the composer of the song.

Dhanush received his second National Film Award for Best Actor for his performance in this film. Name the film.

This acclaimed 2021 film starring Dhanush was praised for its storyline, casting, setting, use of metaphors, direction, performances and major technical aspects. What is the title of this film, which would remind one of a character from the Mahabharata?