BROADWAY NEW YORK IN 1912
Ives even tried portraying the activity of city crowds in music.
ADVENTURES IN SOUND
Ives's music explored advanced ideas like polytonality, where different sections of an orchestra play in different keys at once, like different bands being overheard outdoors at the same time. In Central Park in the Dark (1906), orchestral sounds suggesting the quietness of the empty park itself are increasingly overlaid by noisy bursts of jazz-like music from a nearby café. These are played at the same time by a different orchestra in a different tempo, so that two conductors are needed. Nothing quite like this had ever been written down before.