Olga von Türk-Rohn, also known by her title through marriage as Baroness von Türk-Rohn and by her maiden name Olga von Rohn, was an Austrian soprano and voice teacher. She began her career as a concert soprano in 1887 and then worked as an opera singer in Graz from 1888 to 1890. She also sang in one opera with the Vienna State Opera before her marriage to Baron Camillo von Türk in either 1891 or 1897.

Gustav Walter was a German operatic lyric tenor who sang leading roles for more than 30 years at the Vienna Staatsoper in Austria. He was a highly regarded interpreter of the vocal music of Wolfgang Amadeus Mozart and the lighter tenor roles composed by Richard Wagner. Walther also created the role of Assad in the world premiere of Karl Goldmark's Die Königin von Saba and performed in some Italian and French operas.