Power Star Pawan Kalyan's new movie Gabbar Singh has a surprise for mega fans. Reportedly, Pawan has sung a racy mass song in his style for his forthcoming movie 'Gabbar Singh'. The song has few catchy lyrics and our sources say that the placement of the song is also perfect. The song was shot on Pawan Kalyan, Shruti Hassan and others in a specially erected police station set few days ago, says production hands. Earlier, we have seen Pawan Kalyan singing songs in his films 'Thammudu', 'Kushi', 'Johnny', etc which were received well by the audience. Devi Sri Prasad is scoring the music for Gabbar Singh which is being produced by Bandla Ganesh under Parameswara Arts banner, while Harish Shankar is the director.