Nelson Riddle and His Orchestra are an American big band and studio orchestra formed in the United States in the late 1940s, emerging from jazz and popular-music arranging traditions and establishing a career in studio recordings, radio, film and television. Their work combines big-band swing, lush string arrangements and small-group jazz elements into concise studio-focused arrangements that evolved across the 1950s and 1960s and helped shape mid-20th-century orchestral pop and soundtrack idioms.