Anna Tomowa-Sintow (Bulgarian: Анна Томова-Синтова, by official transliteration Anna Tomova-Sintova, born September 22, 1941, in Stara Zagora, Bulgaria) is a Bulgarian soprano who has sung to great acclaim in all the major opera houses around the world in a repertoire that includes Mozart, Rossini, Verdi, Puccini, Wagner, and Strauss. She enjoyed a particularly close professional relationship with conductor Herbert von Karajan from 1973 until the conductor's death in 1989. 　　Tomowa-Sintow began studying piano at age six. At sixteen she won a national singing competition. She later attended the National Conservatory of Sofia, where she studied voice with Professor Georgi Zlatev-Tcherkin and soprano Katia Spiridonowa and graduated with diplomas in voice and piano, making her stage debut, for her master class finals, as Tatiana in Tchaikovsky's Eugene Onegin. Upon graduation, she joined the Opera Studio of the Leipzig Opera, where, in 1967, she made her professional debut as Abigaille in Verdi's Nabucco. While with this company she built up her repertoire with the leading roles in Puccini's Madama Butterfly and Manon Lescaut; Verdi's La traviata, Il trovatore, and Otello; Mozart's Don Giovanni; Strauss's Arabella; and Werner Egk's Die Zaubergeige. For many of these roles she studied with the company's music director, Professor Paul Schmitz, who had studied with Richard Strauss.