Ilamai Thirumbudhe, the romantic number crooned and composed by Anirudh Ravichander, starring Rajinikanth and Simran, was launched on Youtube today. Interestingly, the lyrics of the song is penned by Superstar's son-in-law, actor Dhanush. 

Catch the song here:

Petta, the Karthik Subbaraj directorial, also stars Vijay Sethupathi, Nawazuddin Siddiqui, Bobby Simha, Trisha, Sasikumar and Megha Akash in important roles. The film was released alongside Ajith's Viswasam on January 10.