The Excursions of Mr. Brouček to the Moon and to the 15th Century is the complete title of Leoš Janáček’s 5th opera, based on two Svatopluk Čech novels. The librettists for Part 1 were František Gellner, Viktor Dyk, František Sarafínský Procházka and others, while Part 2 was written by F. S. Procházka. This two-part satirical opera was premiered at the National Theatre in Prague.