Which opera premiered first, Tosca or The Queen of Spades?
Tosca:  It premiered at the Teatro Costanzi in Rome on 14 January 1900. The Queen of Spades (opera): The Queen of Spades, Op. 68 (Russian: Пиковая дама , "Pikovaya dama", French: La Dame de Pique ) is an opera in 3 acts (7 scenes) by Pyotr Ilyich Tchaikovsky to a Russian libretto by the composer's brother Modest Tchaikovsky, based on a short story of the same name by Alexander Pushkin, but the plot was dramatically altered.
i don't know