Chinese American mezzo-soprano Yanyu Guo has already worked with many opera companies throughout Europe and the United States; including San Francisco Opera, Washington Opera, Bayerische Staatsoper, Opera Paris de Bastille, Göteborg Opera Sweden, Landestheater Salzburg, Nationaltheater Mannheim, Nationaltheater Weimar, Opera North Carolina, Connecticut Grand Opera, Staatstheater Braunschweig, Saarländisches Staatstheater, Staatstheater Freiburg, Theater Essen, Staatstheater Darmstadt, Theater Bielefeld, Theater Mönchengladbach und Krefeld. She has performed with great success as Ortrud in Lohengrin, Amneris in Aida, Azucena in Il Trovatore, Ulrica in Un ballo in maschera, Fricka in Die Walküre and Das Rheingold, Waltraute in Götterdämmerung, Suzuki in Madama Butterfly, and Mutter in Hänsel und Gretel. Yanyu Guo has worked with conductors such as Maurizio Arena, Bruno Campanella, Edo de Waart, Charles Mackerras, Donald Runnicles, Nello Santi, Gerard Schwarz, Patrick Summers, John Fiore; Directors such as John Copley, Sonja Frisell, Michael Hampe, Lotfi Mansouri.
Her concert appearances include Jocasta in Stravinsky’s Oedipus Rex at Alice Tully Hall with Robert Kraft; Verdi’s Requiem with the New York Choral Society in Carnegie Hall; and Berlioz ’ Les Nuits d’Été with Donald Runnicles and the San Francisco Chamber Symphony. Miss Guo has sung Verdi's Requiem, Beethoven's Ninth Symphony and Mahler's Third symphony in America, Germany and Taiwan.
2010 and 2011 include Amneris (Aida) at the Staastheater Darmstadt, Ortrud (Lohengrin) at the Staatstheater Saarbrücken, Ulrika in Un Ballo in Maschera and Mrs. Quickley (Falstaff) at the Theater Kaiserslautern.