Jennifer Bain (ed.), The Cambridge Companion to Hildegard of Bingen. Cambridge: Cambridge University Press, 2021. xvi + 325 pp. £78.99 (hardback) / £23.99 (paperback and ebook). ISBN 978 1 108 47135 0 (hardback), 978 1 108 45781 1 (paperback), 978 1 108 57383 2 (ebook).