Kamal, who is currently busy shooting for Tamil thriller 'Papanasam', has sung a song for a tamil movie AVAM. 'Avam' is an upcoming movie with mostly fresh faces and is in its final stages of shooting now. The film is written and directed by debutant Vijay Vilvakrish,who has assisted Rajeev Menon. Confirming the news, a source told us that Kamal has sung a song in the rock genre for the upcoming film Avam.