Original Broadway Cast of Thoroughly Modern Millie

Broadway music is the musical style associated with Broadway musicals—stage productions mounted in New York City’s Broadway theater district—where songs are written to advance story, reveal character, and energize dance. It blends the craft of Tin Pan Alley song form (especially the 32‑bar AABA standard) with elements of operetta, vaudeville, ragtime, early jazz, and later pop and rock idioms. Orchestrations favor pit‑orchestra color (woodwind doublers, brass, strings, and a rhythm section), clear melodies, memorable hooks, and dramatic key changes that support staging and choreography. Vocally, Broadway favors clear diction, character‑driven delivery, legit and belt techniques, and ensemble harmonies. Its songs—overtures, “I Want” numbers, comic patter songs, love duets, ensemble finales, and “11 o’clock numbers”—have entered the broader canon of American popular song as “show tunes.”

Musical (musical theatre) is a narrative stage form that integrates songs, spoken dialogue, acting, and dance to tell a story. Its core aim is dramatic storytelling in which music advances plot, deepens character, and shapes emotional arcs, often through recurring motives and reprises. Developed primarily on Broadway (New York) and later the West End (London), the genre blends operetta’s melodic lyricism, vaudeville’s variety entertainment, revue’s song-driven showcase, and Tin Pan Alley’s popular songcraft. Musicals range from intimate chamber pieces to large-scale "megamusicals," and from traditional book musicals to rock, hip‑hop, and concept-driven works. The musical’s songbook has fed the Great American Songbook and popular music at large, while the stage craft has influenced film, television, and concert performance.