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
The New Opera Theatre with I Cantori di New York, "Dido and Æneas", with Thaïs St Julien as Dido and Susannah Waters as Belinda, with Bart Folse conducting. The production was first seen at New York City's Symphony Space, then in New Orleans. In 1989, The NOT presented the New Orleans premiere of "Pelléas et Mélisande" (with Tracey Mitchell as Mélisande), which was followed by "Bastien und Bastienne", and the world-premiere of Dr LaBruyère's "Everyman", after the mediaeval Morality Play. The New Opera Theatre's final presentation was of a Benefit Concert, in the fall of 1989, featuring Natalia Rom. Folse and Morgan went on