an Entity references as follows:
Tosca / Puccini, comp.; RĂ©gine Crespin, S (Floria Tosca); Gianni Raimondi, T (Mario Cavaradossi); Gabriel Bacquier, BAR (Le baron Scarpia)... [et al.]; choeurs et orchestre du Metropolitan Opera de New York; Zubin Mehta, dir.