Long before streaming services, podcasts, or even the compact disc, there was Tellus - a radically ambitious publication that imagined recorded sound as an exhibition space. Founded in 1983 in downtown New York, Tellus transformed the humble audio cassette into a magazine, commissioning and publishing new works by musicians, composers, visual artists, poets, writers, choreographers, and performers who were reshaping the boundaries of contemporary art. Each issue invited listeners into a world wh…