Information and the sense of music message of the XX century

There is shown the specific of communication process in the works of the XXth century composers. In the comparative analysis of two vocal compositions («A letter by S. Rakhmaninov to K.S. Stanislavsky» by S. Rakhmaninov» и «Franz Schubert (to a friend)» D. Argento) it is proved that the expanding of usual meanings in the given works with the help of creating new codes enlarges the quality of senses. But the enlargement of information makes them disappear.