The Hamburg State Opera has made a conductor change for its May 27 performance of “Carmen.” The production will now feature William Kelley in his company debut. He will lead a cast starring Maria Kataeva, Gaunqun Yu, Marcelo Puente, and Alexander Vinogradov. William Kelley, a conductor and pianist, currently serves as the Kapellmeister at Theater Bremen. During his tenure, he {…}