Max Kalbeck was a close friend and partisan of Johannes Brahms. Kalbeck's principal achievement was his eight-volume biography of that composer, published from 1904 to 1914, which has never been translated into English. Kalbeck also edited several volumes of Brahms's correspondence and in 1918, the letters of the poets Gottfried Keller and Paul Heyse, as well as publishing two collections of his own music reviews. Kalbeck wrote new libretti for Mozart's "Bastien und Bastienne" and "La finta giardiniera"; and he revised those of "Don Giovanni" and "The Marriage of Figaro" for Gustav Mahler's productions at the Vienna Hofoper. In addition, he supplied
Vlatka Oršanić engaged as a soloist there and also began making guest appearances in other opera houses in what was then Yugoslavia. In that time she was celebrated as an extraordinary Lucia and Gilda. From 1985 to 1990 she lived in Vienna, where she pursued further study in solo singing techniques with Olivera Miljaković. The 1990s saw the beginning of Oršanić's international career. She sang at the Salzburg State Theatre where she appeared as Despina in "Così fan tutte", Bastienne in "Bastien und Bastienne", Euridice in "Orfeo ed Euridice" and Tamiri in "Il re pastore". She went on to sing as a