The Royal Danish Opera has announced its 2017-18 season with a varied repertoire. The opera season opens on Sept. 9, 2017, with a new production of Verdi’s “Rigoletto” starring Johan Reuter in the title character. David Kempster alternates with Reuter as Paolo Carignani conducts the run. The following production will be Puccini’s “Madama Butterfly” with Elizabeth Llewellyn in the title {…}