Simbu's Osthi's single song featuring him alongside sex-siren Mallika Sharawat is consistently making headlines, thanks to the original, 'Dabaang's super hit song, 'Munni Badnam Hui...' featuring Salman and Malaika Arora.

Rumour mills have it that the team 'Osthi' has found their catchy phrase for the Tamil version that goes 'Kalasala'! "The word is supposed to mean joy and it received an immediate nod from Dharani and Simbu", quotes a source close to the team.

Thaman is working on the song composition and recording, after which Shruti Haasan will croon this item number, sometime by the end of this week.

'Osthi' featuring Simbu and Richa Gangopadhyay is gearing up for a Diwali release and will see an audio launch on October 6. Sources close to the unit reveal that Santhanam is at his best as always and the comic sequences will be one of the USPs of the film.