One musician known for merging classical and rock music is Andrew Lloyd Webber. He is celebrated for his innovative compositions that combine elements of both genres, particularly in his famous musicals like "The Phantom of the Opera" and "Cats." Webber's works feature orchestral arrangements alongside modern rock rhythms, creating a unique sound that has captivated audiences worldwide. His blending of styles has influenced numerous artists and has played a crucial role in the evolution of contemporary musical theater.