 He directed at the Schauspielhaus Zürich, the Maggio Musicale Fiorentino in Florence and the German opera season at the Teatro Colón in Buenos Aires.During four seasons at the Colón Ebert worked closely with Fritz Busch, who, like him, was a voluntary exile from Nazi Germany.Later Ebert was a guest director at La Scala, the Metropolitan Opera, the Vienna State Opera and the Salzburg Festival, among others.