It is seldom that Kamal sings for outside movies. But from time to time, he makes an exception. As he did yesterday for Selvaraghavan's Pudhupet.

The actor sung a song under the baton of Yuvan Shankar Raja. Pudhupet stars dhanush whose career needs a major boost.

And perhaps that is what Kamal was doing to help his friend Rajni's son-in-law.