How did Wagner use leitmotifs to connect music with characters and events?

Richard Wagner utilized leitmotifs—brief, recurring melodic themes—as a foundational technique to unify his music dramas. Rather than using music as mere accompaniment, Wagner treated the orchestra as the driving force of the drama, weaving these motifs into a continuous musical web.123

Wagner employed leitmotifs to connect music with characters, situations, and abstract ideas through two primary methods:

• Allusion: Motifs serve to recall or suggest specific extramusical ideas, characters, or past events to the listener, providing psychological insight or reinforcing dramatic action.13
• Transformation: Wagner continually modified these themes in rhythm, texture, and harmony as the plot progressed. For example, in The Rhinegold, a joyful song associated with the Rhine maidens is transformed to represent the corrupting power of the gold when held by the dwarf Alberich.12

By varying and developing these themes, Wagner created a sophisticated, interlocked system that allowed the orchestra to convey complex emotions and even ideas hidden from the characters themselves.23