[1][4] While still a student Or made her debut at Hamburg State Opera[1] as Taumännchen in Humperdinck's Hänsel und Gretel and Papagena in Mozart's Zauberflöte.

[5] As a member of the opera studio of La Monnaie in Brussels, she appeared in 2002 as Cherubino in Mozart's Le nozze di Figaro.

Her repertoire further includes Marzelline in Beethoven's Fidelio, Rosalinde in Die Fledermaus by Johann Strauss, and Tatjana in Tchaikovsky's Eugene Onegin.

[6] In 2012 she performed as the Voice of a Falcon in Die Frau ohne Schatten by Richard Strauss at La Scala in Milan, directed by Claus Guth and conducted by Semyon Bychkov.

[8] Reviewer Lena Dražic of the Wiener Zeitung noted: The incessantly scheming Frau Fluth, as embodied by Talia Or, not only holds all the strings in terms of content, but with her noble soprano is also vocally the undisputed ruler of the scenery.

[9] On 4 June 2016 she was the soprano soloist in three works with five choirs at the choral festival in Lüneburg, singing Poulenc's Gloria, the Requiem "Schwarz vor Augen und es ward Licht" by Harald Weiss, and Bernstein's Symphony No.