'Phir Kabhi', the new song from the Sushant Singh Rajput starrer 'M.S. Dhoni: The Untold Story' was released on Wednesday. The song has been sung by Arijit Singh and composed by Amaal Mallik. It has been picturised on Sushant and actress Disha Patani as Dhoni's first love interest who died in an accident. The biopic will release on September 30.