Question: Which was performed first in history, Palestrina or Il matrimonio segreto?
Sentence (from "Palestrina (opera)"): The composer referred to it as a "Musikalische Legende" (musical legend), and wrote the libretto himself, based on a legend about the Renaissance musician Giovanni Pierluigi da Palestrina, who saves the art of contrapuntal music (polyphony) for the Church in the sixteenth century, through his composition of the "Missa Papae Marcelli".
Relevant evidence: No