four films in one event

The upcoming Sarath Kumar-starrer Sanda Maarudam will be remembered for a long time to come, not only for the film's music, but also for the manner in which the film's audio was launched. The actor, who is playing the lead in the film, which has music by music director James Vasanthan, used the occasion of his film's audio launch to also announce the titles of other films he is producing. 

http://en.wikipedia.org/wiki/R._Sarathkumar
https://www.youtube.com/results?q=R+Sarathkumar

These include  

1. Maari, which has Dhanush and Kajal Aggarwal in the lead and is directed by Balaji Mohan,  
2. Idhu Enna Maayam, which has Vikram Prabhu and Keerthi Suresh playing the lead and directed by Vijay and  
3. Paambu Sattai, which has Bobby Simha in the lead and directed by Adam Dhasan. 

Needless to say, the event was a star-studded one with several stars from all four film units turning up to grace the event. Bharath, Vemal, director Suseenthiran, Ramki and Nirosha were among those present on the occasion.