Mani Ratnam's new love story starring Karthi and Aditya Rao is titled 'Duet' in Telugu. The film's Tamil title is 'Kaatru Veliyidai'. 

Diil Raju is producing it in Telugu. He also produced Mani Ratnam's earlier film 'Ok Bangaram'. In this new romantic drama, Karthi is playing the role of a pilot. Currently the movie is in the last leg of production and it is slated for Feb 2017 release.