Dhanya Balakrishna began her acting career with performances in theatre, before being signed up to play a supporting role in A. R. Murugadoss's 7aum Arivu, where she played a scientist alongside Suriya and Shruti Haasan. She was next seen in two bilingual projects, portraying supporting roles - Balaji Mohan's Kadhalil Sodhappuvadhu Yeppadi and Neethaane En Ponvasantham. itimes.com
Most of the theatre owners in Kanchipuram are rich silk sari manufacturers or textile tycoons, for whom theatre business was just a glamorous hobby. But over the years paying unheard of MG’s for new films had an effect on their business. The grapevine has it that Rs 1 Crore was paid as MG for Endhiran, Rs 65 Lakhs for 7aum Arivu, Rs 50 lakhs for Billa 2 and Rs 30 lakhs for Saguni, which Kanchipuram theatre owners never recovered.
Song: oh ringa ringa. "7aum Arivu" is a Indian science fiction martial arts film. Featuring Johnny Tri Nguyen as the main antagonist. Released on 25 October 2011. The visual effects for the film were done by US based Legacy effects, making this their second Indian film after Enthiran. Selected for the Indian submission at the Academy Award for Best Foreign Language Film. Soundtrack was composed by Harris Jayaraj; includes a Chinese track sung by Wang Hao. Audio released on 22 September 2011.