2) is a composition for 24 performers on 12 radios and conductor by American composer John Cage and the fourth in the series of Imaginary Landscapes.

It is the first installment not to include any percussion instrument at all and Cage's first composition to be based fully on chance operations.

As Cage's compositional style developed, he found that, in order to circumvent the listener's wish to find any emotional appeal to music, the composer himself had to detach from his own work and should not have any control on the composition, that is, he had to remove any personal trait that identifies him as a composer.

The first performance of this composition took place at the McMillin Theater at Columbia University, New York, with Cage himself conducting, on May 2, 1951.

[4] In reference to this, he commented: "It is thus possible to make a musical composition the continuity of which is free of individual taste and memory (psychology) and also of the literature and 'traditions' of the art.

It is prefaced by an extensive explanation on the indication of durations, station tunings, dynamics (numbers ranging from 3 to 15, 3 being turned on but inaudible, 15 being maximum volume).