John Fraser's Medusa is a stunning fable for our times, in which the stories of Medusa, the Gorgon and the French ship Medusa are intertwined to create a Pilgrim's Progress for the 21st century.'Medusa is a trip, a bending of the legends. It is a symphonic poem, where at the end, we even hear a few notes of a hymn to joy. The fragments of myth, legend and belief drift round like harmonies that seek resolution. But this mode is post-modern,...