Itzhak Perlman. The theme song of True Lies is "porunacabeze", which is a piece of pure music composed by Carlos Cardel, the uncrowned king of Argentine tango, and played by Itzhak Perlman. The Chinese name of Porunacabeze is "One Step Difference". Or "Only for Lovers." It is a violin piece with an aristocratic temperament. Since its birth in 1935, it has become the preferred dance music for tango in movies. The melody of steel and softness seems to adapt to the psychology of each character and the foreshadowing of any scene.