Its the Redux version of the track Jab Tak which is sung by Armaan Malik for the movie M.S. Dhoni - The Untold Story. The song is composed by Amaal Mallik, while lyrics have been penned by Manoj Muntashir and we are sure you literally going to love it. The album looks pretty good with actually is a plus point for the movie. Movie has the right buzz. The malik brothers did showed their best work ! Take a listen.