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
Jeremy Koh Chen, and baritone Stephen Roberts. Koh is the first Singaporean to win the Tan Ngiang Kaw/Tan Ngiang Ann Memorial Vocal Competition. He was also awarded the certificate of special mention and bronze award at the 5th Bangkok Opera Foundation International Singing Competition (2013). Koh's operatic endeavors include Raoul de St. Brioche (The Merry Widow), Bastien (Bastien und Bastienne), Gingerbread Witch (Hansel and Gretel), Kornélis (La Princesse Jaune), Scholar Luo (Liu San Jie), Frantz (Le 66), Alfred (Die Fledermaus), Zacharia (The Blind Beggars) and He from the world premiére of Nicole Murphy’s The Kamikaze Mind. As a concert soloist, he has