Final answer:
Oklahoma! by Rodgers and Hammerstein set the historical precedence for the book musical and combined a scripted storyline with musical compositions. The musical was successful due to the intelligent combination of past successful elements and the integration of music and choreography. It became a massive hit and set records on Broadway.
Step-by-step explanation:
Oklahoma! by Rodgers and Hammerstein set the historical precedence for the book musical. The musical combined a scripted storyline known as the libretto with musical compositions called the score. It was successful due to the intelligent combination of past successful elements, such as social issues, dance sequences, love triangles, and a psychological dream ballet.
Agnes de Mille, the choreographer, played a key role in the integration of music and choreography. The musical went on to become a massive hit, running for more than five years and setting records on Broadway.