Leitmotif is recurring musical theme associated with a character, place or idea.
A leitmotif (German: 'leading motif') is a recurring musical theme, harmony or phrase associated with a specific character, place, object or idea in a dramatic work, returning whenever that entity appears or is referenced. The term was coined by musicologist Hans von Wolzogen in connection with Wagner's Ring Cycle, in which each major figure — Siegfried, Brünnhilde, the sword Nothung, Valhalla — has their own distinctive musical signature. Wagner developed the device into an entire compositional system: hundreds of leitmotifs weave through the four operas, combining, transforming and commenting on the dramatic action. The technique was directly absorbed by Hollywood film composers: John Williams's Star Wars score, with its themes for Luke, Leia, Darth Vader and the Force, is essentially a Wagnerian leitmotif system. The device gives music the ability to comment, recall, foreshadow and irony. Richard Wagner developed the technique most extensively across his four-opera 'Ring' cycle, assigning distinct musical themes to characters (Siegfried, Brünnhilde), objects (the ring itself, the sword Nothung) and abstract forces (fate, the curse), then weaving those themes together, transformed and combined, as the drama's relationships and stakes evolved — a listener who knows the motifs can track dramatic meaning that is never stated in the sung text at all, purely through the orchestra's commentary. Wagner himself did not coin the term — it was applied by later analysts, notably Hans von Wolzogen — but the technique became so identified with his work that 'Wagnerian leitmotif' is still the default reference point. The device proved extraordinarily portable: film composers, working in a medium that likewise needs to convey character and mood without constant explicit narration, adopted it almost wholesale. John Williams's scores are the clearest modern heir — the 'Imperial March' for Darth Vader, or the shark motif in 'Jaws' — functioning exactly as Wagner's motifs did, returning and transforming as a character's situation changes. Video game scoring has extended the technique further still, using adaptive leitmotifs that shift in real time based on player choices, a use of the device Wagner could not have anticipated but whose underlying logic — music as a second, wordless narrator — he essentially invented.