Montserrat Caballé was born in Barcelona. She studied at the Barcelona Liceo and won the Liceo gold medal in 1954. In 1956 she joined Basel Opera. Between 1956 and 1965 she sang with a number of European Houses, including Bremen, La Scala, Vienna, Barcelona, and Lisbon. At the "eleventh hour" on April 20, 1965, she substituted for the indisposed Marilyn Horne in a concert performance of Donizetti's Lucrezia Borgia, which brought her acclaim and "overnight" super-stardom. She became one of the leading figures in the revival of interest in the bel canto operas of Bellini and Donizetti. She made her Metropolitan Opera debut in 1965 as Marguerite in Faust. Although Caballé's career has centered around the dramatic roles of Verdi, she has also sung the Marschallin (Der Rosenkavalier), the Countess (Marriage of Figaro), and Queen Isabella (in the premiere of Leonardo Balada's Cristobál Colón). In addition, she recorded two tracks on an album by New Age composer Vangelis, and collaborated with the late Freddie Mercury of the rock group Queen, who wrote "Exercises in Free Love" for her. She appeared on his hit album, Barcelona.