Cast recording

A cast recording is a recording of a stage musical that is intended to document the songs as they were performed in the show and experienced by the audience. An original cast recording or OCR, as the name implies, features the voices of the show's original cast. A cast recording featuring the first cast to perform a musical in a particular venue is known, for example, as an "original Broadway cast recording" (OBCR) or an "original London cast recording" (OLCR). Cast recordings are (usually) studio recordings rather than live recordings.