What genre are both Euridice and Der Kaiser von Atlantis?
Euridice (Peri) Euridice (also Erudice or Eurydice) is an opera by Jacopo Peri, with additional music by Giulio Caccini. It is the earliest surviving opera, Peri's earlier "Dafne" being lost. (Caccini wrote his own "Euridice" even as he supplied music to Peri's opera, published this version before Peri's was performed, in 1600, and got it staged two years later.) The libretto by Ottavio Rinuccini is based on books X and XI of Ovid's "Metamorphoses"
Phaedra (opera) Phaedra is a 'concert opera' in two-acts by Hans Werner Henze. Its first performance was given at the Berlin State Opera on 6 September 2007. The work is a co-commission and co-production with the Berliner Festspiele, Théâtre de la Monnaie, Brussels, Alte Oper Frankfurt and the Vienna Festival.