The mesmerising 50 sec teaser of ace director Mani Ratnam's romantic thriller Kaatru Veliyidai is rocking the net. The teaser promises stunning visuals and a poetical plot. Sony Music has bagged the audio rights, and the first single will be released on Feb 2. Starring Karthi and Aditi Rao in the lead, the team has already announced the release date for April 2017. Also starring RJ Balaji, Shraddha Srinath, and Delhi Ganesh, the film has music by AR Rahman and cinematography by Ravi Varma.