The makers of the film `Super 30` have released an all-new song titled, `Question Mark` on Monday. The song had a big surprise for the fans as it has vocals by actor Hrithik Roshan himself. To the surprise of his fans, they all heard the song in Hrithik`s voice and the fans totally loved it. Appreciations have poured in from all across for the actor`s rap skills and baritone. Hrithik can be seen rapping the lines at first in the song where he is teaching mathematics to his students with references to real-life. He is seen teaching in a class of his Super 30 students where the consistent `question mark` is flashing and Hrithik is singing his way to explain it all to his students. The song is penned by Amitabh Bhattacharya and composed & produced by Ajay-Atul. The song is sung beautifully with a rap portion and the chords, mixed to give us a perfect blend. `Question mark` has been mastered by Donal Whelan with backing vocals by Suzanne D`Mello and Group, with Hrithik`s voice bringing it all together. The film is based on the real life character of Anand Kumar who trains students for IIT-JEE in Bihar, whose role is played by Hrithik. The movie also features Mrunal Thakur alongside Hrithik.