Music is the 'pure' art par excellence. It says nothing and has nothing to say. Never really having an expressive function, it is opposed to drama, which even in its most refined forms still bears a social message and can only be 'put over' on the basis of an immediate and profound affinity with the values and expectations of its audience. The theatre divides its public and divides itself. The Parisian opposition between right-bank and left-bank theatr, bourgeois theatre and avant-garde theatre, is inextricably aesthetic and political.
