The actor made a rocking appearance and sang his current hit "Kolaveri Di". He was accompanied by the composer of the song Anirudh Ravichander.
"When Anirudh and I worked on ‘Why This Kolaveri Di?’, we just had a lot of fun and were so casual about it. We had not the slightest inkling that the song would sell like a hot cake and go viral on the internet," Dhanush said at the grand finale.
While finalist Manasi Parekh sang the Gujarati version of "Kolaveri Di", another finalist Kapil Sharma sang a Punjabi version of the song.
Other celebrities regaled the cheering audience with their comic and musical acts, but it was the Dhanush-Anirudh duo who stole the show.
"Star Ya Rockstar" began with small screen celebrities – Ragini Khanna, Neha Marda, Vikas Bhalla, Sumeet Raghavan, Manish Paul, Chhavi Mittal, Manasi Parekh, Sachin Pilgaonkar, Debina Bonnerjee and Kapil Sharma of which Manasi, Sachin and Kapil have reached the finale.
The trio will vie for the big award on the grand finale, which will be aired Dec 10.
The show is being judged by Anu Malik and Alisha Chinai.