How did Richard Strauss become known as Richard Wagner’s musical heir?

Richard Strauss became known as Richard Wagner’s musical heir primarily due to the triumphant reception of his symphonic poem Don Juan, which he conducted in Weimar in November 1889.1

This recognition was fostered by several key factors:

• Artistic Influence: Although his father, a horn player, revered the classics and detested Wagner, Strauss secretly nurtured an admiration for Wagner’s music. This interest was later reinforced by the composer Alexander Ritter, who encouraged Strauss to move away from classical forms and embrace the symphonic poem as a medium for his ideas.1
• Orchestral Mastery: Strauss achieved a major breakthrough by harnessing the expressive power of the massive Wagnerian opera orchestra for the concert hall. His ability to utilize large-scale orchestral textures, combined with his unrivaled descriptive powers and mastery of instrumentation, solidified his reputation as a successor to the Wagnerian tradition.2
• Stylistic Evolution: Following his early works, his style developed into the bold, bravura, and flexible post-Romantic approach that dominated the late 19th and early 20th centuries, further aligning him with the legacy of Wagner, Hector Berlioz, and Franz Liszt.2