Are both Eine florentinische Tragödie and Alceste operas?
Alceste (Gluck) Alceste, Wq. 37 (the later French version is Wq. 44), is an opera by Christoph Willibald Gluck from 1767. The libretto (in Italian) was written by Ranieri de' Calzabigi and based on the play "Alcestis" by Euripides. The premiere took place on 26 December 1767 at the Burgtheater in Vienna.
Cambise (opera) Il Cambise is an opera by Alessandro Scarlatti to a libretto by Domenico Lalli presented at the Teatro San Bartolomeo for carnival 1719 in Naples. It was the composer's 111th opera and his last for Naples.