Premise: Die Hochzeit des Camacho ("Comacho's Wedding") is a Singspiel in two acts by Felix Mendelssohn, to a libretto probably written largely by Friedrich Voigt, based on an episode in Cervantes's "Don Quixote". The opera is listed as Mendelssohn's op. 10. It was written between 1824 and 1825, and first performed publicly at the Berlin Schauspielhaus on 29 April 1827.
Hypothesis: Die Hochzeit des Camacho was first performed publicly more than 100 years ago.