considered to be the first piece of musical theatre that conforms to the modern notion of a \book musical\…

considered to be the first piece of musical theatre that conforms to the modern notion of a \book musical\ came together\n19\nyip! yip! yaphank\noh boy!\nlittle johnny jones\nthe black crook
Answer
Brief Explanations:
The Black Crook is widely - regarded as the first piece of musical theatre that conforms to the modern notion of a "book musical" as it integrated story, song, and dance in a more cohesive way compared to earlier forms.
Answer:
The Black Crook