A year earlier, on June 22, 1909, she had performed the role of Avis in the United Kingdom premiere of Ethel Smyth's The Wreckers at His Majesty's Theatre.
[4] She was committed to the Royal Opera House, Covent Garden in 1910-1911 where she notably portrayed Toinette in the United Kingdom premiere of Xavier Leroux's Le Chemineau.
[5] Other roles she performed at Covent Garden included Countess Almaviva in The Marriage of Figaro,[6] Helmwige in Die Walküre, and Gutrune in Götterdämmerung.
[8] Her other roles with the Boston Opera Company included Donna Elvira in Don Giovanni, Giulietta in The Tales of Hoffmann, La Regina in Germania, Leonora in Il trovatore, Marguerite in Faust, Minnie in La fanciulla del West, and Santuzza in Cavalleria rusticana.
[8] In 1913 Amsden performed the roles of Maliella in Ermanno Wolf-Ferrari's The Jewels of the Madonna and Verdi's Aida at the Century Opera House in New York.