sentences:  In 1977, Sardinero sang at the Metropolitan Opera, as Marcello in "La bohème".His alternating Mimìs were Ileana Cotrubaș, Katia Ricciarelli and Scotto; Dame Josephine Barstow, José Carreras and Justino Díaz were also in the performances, which were conducted by James Levine.His recordings include "L'amico Fritz" (with Luciano Pavarotti and Mirella Freni conducted by Gianandrea Gavazzeni, 1968), "Manon Lescaut" (opposite Montserrat Caballé and Plácido Domingo, 1971), "Un giorno di regno" (with Jessye Norman, Fiorenza Cossotto, Carreras and Ingvar Wixell, led by Lamberto Gardelli, 1973), "La bohème" (as Schaunard, with Caballé, Domingo, Sherrill Milnes, Judith Blegen and Ruggero Raimondi conducted by Sir Georg Solti, 1973), "Lucia di Lammermoor" (opposite Caballé, Carreras and Samuel Ramey, led by Jesús López-Cobos, 1976), "Edgar" ("live," with Scotto and Carlo Bergonzi, 1977) and, again, "Manon Lescaut" (with Miriam Gauci, 1992).