Oscar-winning composer A.R. Rahman, who has composed songs for filmmaker Ashutosh Gowariker's 'Mohenjo Daro', has also lent his voice to a romantic song for the upcoming epic adventure-romance film.

Titled 'Tu hai', it will be the first song to be released from the film, which stars Hrithik Roshan and Pooja Hegde. The track will be out in July.

'This is my fifth collaboration with Rahman after my TV show 'Everest'. It has been a rewarding experience as we both got the chance to enter an entirely different space and time,' Gowarikar, who has previously worked with Rahman in films like 'Lagaan: Once Upon a Time in India', 'Swades' and 'Jodhaa Akbar', said in a statement. Set in the pre-historic era, the film features a love story between Hrithik and Pooja.

"We had to build a lot from imagination, and we did that after doing research and consulting the archaeologists about the possibilities and probabilities of this period, which does not get categorised as history, but as pre-history," Gowariker said.

'I stayed within the findings from the excavations and the artefacts, while creating a make-believe world. And Rahman has helped shape that world beautifully, exotically and believably,' Gowariker added.

'Mohenjo Daro' is set to release on August 12.