Which opera was first performed, Don Quichotte or Euridice?
Don Quichotte: Don Quichotte ("Don Quixote") is an opera in five acts by Jules Massenet to a French libretto by Henri Caïn. Euridice (Peri):  It is the earliest surviving opera, Peri's earlier "Dafne" being lost. Euridice (Peri):  (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.)
i don't know