Director of Orchestra Austrian, naturalized American, born in Vienna on April 2, 1905 and died in Ross (California, United States) on February 9, 1988. He/She studied at the Academy of music and at the University of his native city and gives its first concert at the Max Reinhardt Theatre in 1925, after which is hired to direct the the own Vienna Volksoper, in which remained until 1928. In this year, and until 1937, he/she directs the Prague State Opera, charge that happens the Assistant to Arturo Toscanini at the Salzburg Festival in the years 1936 and 1937. Following the refusal by the Italian master in the nazi Germany, produced just let themselves feel the first effects of the racist and belligerent policy of Hitler, Adler went to the United States, and there directed the operas of Chicago (1938-1943) and San Francisco (1943-81). In this last theater, began as director of the choir, to undertake later artistic director in 1953 and, since 1956, and until his retirement, general manager. In front of this theatre, dedicated fully in his later years to the organizational work to the detriment of the address, has carried out remarkable work for the care of the artistic result and the constant inclusion of new singers and directors, as well as the broadcast of the opera by schools.