Stylish star Allu Arjun revealed promo song teaser from his upcoming film "Son of Sathyamurthy" on his official you tube channel few hours back. Promo song features DSP (Devi sri Prasad) and Allu Arjun . Buzz on social media already started with the celeb tweets and shares . Teasor video is going viral and getting positive feedbacks . Promo video combination is being repeated for the second time after julayi which was also directed by Trivikram Srinivas.