Schlosser was born on 25 July 1929 in
Karlovy Vary. She studied in
Regensburg,
Munich and
Wiesbaden. She joined the opera company at the
Theater Regensburg (1947–1953), first as a member of the chorus and then in small roles. In 1951 she sang in the chorus at the
Bayreuth Festival. From there she moved to the
Hessisches Staatstheater, Wiesbaden (1953–1957); and the Stadttheater/Opernhaus,
Zürich (1957–1969). She made numerous guest appearances at other opera houses, including those in
Basel,
Bologna,
Düsseldorf,
Frankfurt,
Hamburg,
Lisbon,
Milan (La Scala),
Munich (
Bayerische Staatsoper), Rome (Teatro dell'Opera), and
Stuttgart. Schlosser's obituarist in the
Neue Zürcher Zeitung wrote, "She was one of the public's favourites ... The breadth of her repertoire ranged from roles for lyrical coloratura soprano to youthful-dramatic roles". The list of her roles given in Paul Suter's
Sängerlexikon – detailing singers from 1900 to 1989 – ranges from operetta to Wagnerian epic, from
Gluck and
Handel opera to modern works. Her operetta roles included Laura in
Der Bettelstudent, Saffi in
Der Zigeunerbaron and Kurfürstin Marie in
Der Vogelhändler. Her
Wagner roles included Eva in
Die Meistersinger, Elsa in
Lohengrin and Wellgunde, Gerhilde and Siegrune in
The Ring. In the French repertoire her parts included Micaëla in
Carmen, the title role in
Manon, and Antonia, Giulietta and Stella in
The Tales of Hoffmann. As a
Mozartian her roles included Fiordiligi in
Così fan tutte, Pamina in
The Magic Flute, Zerlina and Donna Elvira in
Don Giovanni and, in
The Marriage of Figaro, Cherubino, Susanna and the Countess at various times. Her only regular Verdi role was Desdemona in
Otello; her
Puccini repertoire was larger, and included Mimi in
La bohème, Lauretta in
Gianni Schicchi, Liù in
Turandot, and the title roles in
Manon Lescaut and
Madama Butterfly. Schlosser made her last stage appearance playing Elsa in 1970. After her retirement from the opera house she taught, at the Cantonal Baccalaureate School for Adults in Zürich and took private pupils. She died, aged 90, on 22 November 2018. ==References==