What is the principal difference between opera and the Broadway musical?

The key difference is, in a typical musical dialogue is spoken by the characters who occasionally burst into song. In most operas, the singing never stops. Even instructions as mundane as, "Open the door," are sung rather than spoken. A solo in an opera is known as an aria.

The key difference is, in a typical musical dialogue is spoken by the person who occasionally burst into song. most operas, the singing never stops. as, "Open the door," are sang rather than spoken. A solo in an opera is known as an aria.