From her Berlin base, Kurt started her international career, giving successful guest performances at the Royal Opera House Covent Garden, London (since 1910), and during the Salzburg Mozart-Fest in 1910 (which would become the Salzburg Festival later).
Kurt's international career began from her Berlin base, where she gave impressive guest performances at the prestigious Royal Opera House Covent Garden, London, since 1910, and also participated in the inaugural Salzburg festival honoring Mozart's legacy in 1910.