Frëd Himebaugh of the Fredösphere has composed a fifteen-minute opera using Terry Bisson’s short story “They’re Made Out of Meat” as the libretto. You can purchase it here. See also Frëd’s earlier posts here and here.
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Here’s one of the more impressive videos I’ve seen recently. The characters and tune are from the vast Touhou project, but you don’t need to know anything about that to appreciate the phantasmagorical transformations.