The second season of Airtel Super Singer Junior(Tamil – Thamizhagathin Chellakuralukkana Thedal) (English: the search for the sweet voice of Tamil Nadu) premiered on 21 June 2009. The music competition reality TV show was again telecast on Vijay TV, and Bharti Airtel returned to sponsor this show. Episodes were telecast between Monday and Thursday each week at 9:00 pm. Children aged 6 years to 14 showcased their singing talent. The show initially promised that its winner would receive ₹25 lakhs (2.5 million Rupees) in prize money, which was later changed to a villa in Anugraha Satellite Town valued at ₹25 lakhs by its sponsor, Navashakthi Township and Developers.

Following playback singer Chinmayi's decision to stop hosting Vijay TV's Super Singer earlier in the year, various television anchors including Dhivyadarshini (DD), Sivakarthikeyan, Aishwarya Prabhakar, and Uma Padmanabhan hosted the show at various intervals, and playback singer Dhivyadarshini (DD) appeared regularly during the season as a replacement. Ananth Vaidyanathan returned as a voice trainer, and playback singer K. S. Chithra returned as a permanent judge of the show. Playback singers Mano, and Malgudi Subha also joined the show as permanent judges to replace Usha Uthup who quit the show.

A number of eminent playback singers and music directors appeared during the season as guest judges, including P. B. Sreenivas, P. Susheela, M. S. Viswanathan, S. Janaki, Sadhana Sargam, Nithyasree Mahadevan, Suchithra, Harish Raghavendra, Unni Menon, Madhu Balakrishnan, Sowmya, Pop Shalini, and Pushpavanam Kuppuswamy. Stars from the senior version of the show also appeared as judges during the season, including former contestants Naresh Iyer, Nikhil Mathew, and Ajeesh, and permanent judges P. Unnikrishnan, Anuradha Sriram and Srinivas. The winner Alka Ajith, was introduced as a playback singer in the 2011 Malayalam-language film The Train.