Is the musical rhythm of recitative is very strict and rigid?

No, the musical rhythm of recitative is not very strict and rigid. Instead, recitative is characterized by its flexible and speech-like quality, allowing for greater expression and emotional nuance. This style often follows the natural rhythms of spoken language, with variations in tempo and phrasing to enhance the storytelling. As a result, recitative serves as a contrast to more structured forms of musical composition, such as arias.