After a second sinfonia, Bouroun is dissatisfied that Thésée's infatuation with Ariane is preventing him from killing the Minotaur. Resolving to do the deed himself, he is killed by the Minotaur (offstage). When the Minotaur appears, he turns out to be Theseus's double, and taunts him – "who dares lift his hand to strike himself a death-blow?". Thésée slays the Minotaur however.