Karl Böhm conducts the Symphony No. 40 in G minor, K. 550 by Wolfgang Amadeus Mozart, which is undoubtedly Mozart's most popular work in this genre. Karl Böhm (1894-1981) was universally acclaimed for his Mozart interpretations. Though Wagner was one of Böhm's first loves, his friendship with Richard Strauss led to a deep knowledge and appreciation of Mozart. In his autobiography, Böhm wrote that "Richard Strauss revealed to me the ultimate secrets of this, in my opinion, greatest of all musical geniuses, Mozart." Böhm's discovery of these secrets transformed his Mozart interpretations into unforgettable events.