Austrian bass-baritone Alexander Grassauer studied at the University of Music and Performing Arts Vienna with Professors Karlheinz Hanser and Florian Boesch, and received further artistic guidance from Elīna Garanča, Ramón Vargas, and Robert Holl. After early roles including Masetto, the Marquis and Figaro, he joined the ensemble of the Staatstheater am Gärtnerplatz in Munich (2019–24), where his repertoire encompassed Leporello, Don Basilio, Alidoro, Count Walter, and Frank.
Guest engagements have taken him to the Semperoper Dresden, Deutsche Oper am Rhein, and the Wiener Kammeroper, as well as on tour to Shanghai with Teatro alla Scala. In 2024, he made his Bayreuth Festival debut, appearing as Hermann Ortel and Melot.
In the 2025/26 season he returns to Munich, appears in Beethoven’s Symphony No. 9 in Warsaw and at the Bavarian State Opera, and sings the Speaker in Dresden. He also returns to Bayreuth in Das Rheingold. A sought-after concert soloist, he performs works by Beethoven, Haydn, Schmidt, Mendelssohn, Mozart and Brahms, and gives Lied recitals in Stuttgart and Nuremberg.
Alexander Grassauer is a prizewinner of the Hugo Wolf Competition in Stuttgart, the Emmerich Smola Prize, the International Brahms Competition, and the Otto Edelmann Competition in Vienna.