'Cage, Imaginary Landscape No. 4' at Alte Oper, Frankfurt
"Imaginary Landscape" is the title of a series of five pieces by American composer John Cage, all of which include instruments or other elements requiring electricity. 'Imaginary Landscape No. 4 (March No. 2)' is a composition for 24 performers on 12 radios and conductor by the American composer and the fourth in the series of 'Imaginary Landscapes'. It is the first installment not to include any percussion inst…