Book Review: ‘Ghost Music,’ by An Yu

GHOST MUSIC, by An Yu Not much is known about the inner life of mushrooms, but we can guess at the presence of a sort of subterranean sociality from the extensive networks of underground filaments that link individual organisms to a vast community of plants, tree roots and other fungi. Although the mushroom’s cap and stalk are its most obvious features, they are only the visible signs of a deeper life — the way that the tip of an iceberg hints at the bulk obscured below, the white and black…