Tomislav Mužek has canceled his upcoming performance of Beethoven’s “Fidelio.” As a result, the Semperoper Dresden announced that Robert Dean Smith will step in for the tenor for the Sept. 23, 2018 performance. Smith is an established tenor, who has performed at all the major opera companies around the world, including the Metropolitan Opera, Teatro alla Scala, Bayerische Staatsoper, Bayreuth Festival, and {…}