Razo

A razo (Old Occitan [raˈzu], literally "cause", "reason") was a short piece of Occitan prose detailing the circumstances of a troubadour composition. A razo normally introduced an individual poem, acting as a prose preface and explanation; it might, however, share some of the characteristics of a vida (a biography of a troubadour, describing his origins, his loves, and his works) and the boundary between the two genres was never sharp.