International singer Akon has proved that he is a versatile singer by singing a Bollywood song for the movie Ra.One. The song Chammak Challo has become a huge rage on Youtube and has also made its way to Facebook pages. Check out the full story. Visit us at http://www.rajshri.com/Listing/Trailers-and-Trivia/Free-Hindi-Trailers-Trivia-New-Bollywood-Promos-Clips-First. Look for the latest bollywood film reviews makings & trailers.