Both Tabu and Shraddha, who will be seen playing crucial roles in Vishal Bhardwaj's next, will be crooning a song 'Roshe valle'.
"Tabu and Shraddha will be singing an old Kashmiri folk song. It is titled 'Roshe valle'," sources close to the development told PTI.
Shraddha had earlier sung 'Galliyan...' in her last release 'Ek Villain'.
Reportedly, both Tabu and Shraddha are going to perform live at the music launch of 'Haider', which will be held soon.
'Haider' is an adaptation of William Shakespeare's Hamlet, and is set in Kashmir. The film stars Tabu, Shahid Kapoor, Shraddha Kapoor and Kay Kay Menon, and is scheduled to be released on October 2.