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.
Il turco in Italia Il turco in Italia (The Turk in Italy) is an opera in two acts by Gioachino Rossini. The Italian-language libretto was written by Felice Romani. It was a re-working of a libretto by Caterino Mazzolà set as an opera (with the same title) by the German composer in 1788.