After the massive success of ‘Dangal’, fans are eagerly waiting for Aamir Khan’s next onscreen appearance in Bollywood. The celebrity actor has a special appearance of about 40 minutes in ‘Secret Superstar’, which is produced by Aamir Khan and directed by his former manager Advait Chandan. According to trade reports, Aamir Khan has been showing the finished product to a select few in the industry to gauge their experience of the movie, and Mr Perfectionist has got some positive feedback from a few celebs and cinema stars. Aamir Khan will play a musician in ‘Secret Superstar’, which is set to hit the screens on August 4.