Iconic images from fiery scenes of catharsis in Gone With the Wind and Rebecca to The Third Man's decadent cinematography have proven inseparable from their accompanying melodies. From the 1910s-50s, producer David O. Selznick depended upon music to distinguish his films from his competitors'. By demonstrating music's value in film and encouraging its distribution through sheet music, concerts, radio broadcasts, and soundtrack albums, Selznick changed audiences' relationship to movie music. But what role did Selznick play in the actual music composition that distinguished his productions, and how was that music made? As the first of its kind to consider film music from the perspective of a producer, this book tells the story of the evolution of Selznick's style through the many artists whose work defined Hollywood sound.