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
Comic opera often styled rock operas. Comic opera Comic opera denotes a sung dramatic work of a light or comic nature, usually with a happy ending. Forms of comic opera first developed in late 17th-century Italy. By the 1730s, a new operatic genre, "opera buffa", emerged as an alternative to "opera seria". It quickly made its way to France, where it became "opéra bouffon", and eventually, in the following century, French "operetta", with Jacques Offenbach as its most accomplished practitioner. The influence of the Italian and French forms spread to other parts of Europe. Many countries developed their own genres of comic