Hotter trained as an organist and choirmaster, but found his vocal gifts pushing him in the direction of a singing career. He made his debut as the Speaker in Mozart's Die Zauberflöte at the age of 20 in the small theater at Opava. Following contracts in Prague, Breslau, and Hamburg, he was invited to Munich in 1938 and remained associated with that company for much of his subsequent career. In Munich, he came in close contact with composer Richard Strauss who, much impressed with Hotter's singing and acting, composed three roles specifically for him, beginning with the Commandant in Friedenstag (Freedom's Day), which had its premiere in Munich in 1938. Following that, Strauss wrote for Hotter the part of Jupiter in Die Liebe der Danae (The Love of Danae). Hotter sang the dress rehearsal for a much-delayed production at Salzburg just before all theaters were closed in 1944. In Capriccio, Strauss' final opera, Hotter appeared as Olivier at the 1942 premiere.
With the cessation of World War II hostilities, Hotter's career took him abroad, first to London in 1947 where, among other roles, he performed Wotan in stagings given in English; he remained a revered artist in England for as long as his long career continued. In 1950, he made an impressive debut at New York's Metropolitan Opera as the protagonist in Wagner's Fliegende Holländer. His immense voice and baleful appearance made a profound effect upon both critics and audiences as yet more comparisons to Chaliapin were invoked. After only a few seasons, however, his Met career came to a halt when general manager Rudolf Bing sought to steer him in the direction of secondary parts. The rest of the opera world was only too happy to hear him perform the great Wagnerian and Strauss roles in which he was incomparable and he was a welcome guest in San Francisco and Chicago.
Vienna was one of several European venues to benefit from his appearances in roles he seldom undertook in the United States. Roles such as Don Basilio in Il barbiere di Siviglia and King Phillip in Verdi's Don Carlo were two especially memorable interpretations.
Throughout the 1950s and on through the last of his public appearances in 1972, Hotter's voice was increasingly prone to unsteadiness at full volume. Acute hay fever bedeviled him during summer engagements such as those at the Bayreuth Festival. Still, his performances remained riveting even in vocal decline and Georg Solti chose him for his Ring recording even after he was significantly past his prime.
While better known as an operatic personality, Hotter was a magnificent interpreter of German lieder (he in fact enjoyed performing this music more than opera) and made many recordings of the repertory over a three-decade span. His interpretive genius and ability to scale back his huge voice suited this kind of singing superbly, and the reissue on CD of his best song recordings has won the enthusiasm of a new generation of followers., Rovi