May Festival: Voices of the Earth Natural History is a collaboration between composer Michael Gordon and the Steiger Butte Singers. Written and commissioned to mark the centennial of the National Park System. In contrast, Julia Wolfe’s Pulitzer Prize-winning Anthracite Fields is a haunting and powerful oratorio that captures not only the sadness of lives lost in the anthracite coal fields at the turn of the 20th century, but a way of daily life now also lost. The Bang on a Can All-Stars lend their ferocity to this profound work alongside the May Festival Chorus.