Following daughter Alia Bhatt's footsteps, Bollywood filmmaker Mahesh Bhatt has turned playback singer for nephew Emraan Hashmi in his upcoming film 'Mr X'. The director has sung the movie's title track that features Emraan Hashmi and actress Amyra Dastur. In the film, directed by Mahesh Bhatt, Hashmi is playing a superhero/vigilante.