Hugo Botstiber (1875-1941) played an essential role for Viennese music life between the Fin de Siècle and the occupation of Austria by Nazi-Germany in 1938. As the secretary general of the Wiener Konzerthausgesellschaft, the musicologist had been in charge of operating the Konzerthaus for 25 years. Opened in 1913, it was the most modern concert venue in Austria and soon became one of the countrys most significant musical institutions. Prior to his employment with the Wiener Konzerthausgesellschaft, Botstiber had held high administrative posts at the Wiener Konzertverein, the Gesellschaft der Musikfreunde as well as the Academy for Music and Performing Art. In fact, Botstiber had belonged to the most influential figures in Viennese music life for almost four decades. Still, his activities have not yet been analyzed in detail as the academic discourse rather concentrates on the music itself and the composers but not on the organizational framework, in which the artistic performances took place. This survey therefore investigates Botstibers career and analyzes his impact on Viennese concert life. The focus is particularly put on his achievements for the Konzerthaus, which turned into a home for modern music due to his efforts already during the 1920s. These detailed studies are integrated into a general biographical survey on Botstiber since his private environment and his personal experiences are directly related to his career and affected his actions. This especially applies to his education and socialization in Fin-de-Siècle-Vienna, which also included the encounter with representatives of the Second Viennese School. Moreover, Botstibers life can be considered an interesting contribution to various aspects of Austrian history from the late 19th to the middle of the 20th century. It is therefore worthwhile to be explored, especially with regards to his Jewish roots, which forced him to immigrate to Great Britain in 1939.