Veteran singer LR Eswari is going to croon for the item song in Osthi. Earlier it is rumoured that Shruti Haasan will lend her voice to this song but suddenly LR Eswari has been confirmed to sing this item number Kalasala along with T Rajendar. Simbu said Kalasala is going to be a rocking song of the album. The entire team including me, Thaman, dad, felt that the song will become as catchy and popular, like the original song. LR Eswari vocal is an added essence to this hot item number .