Aprile Millo Special Verdi Prize Award in Barcelona (1979), and the Geraldine Farrar Award (1980). After leaving the San Diego Opera, Millo sang her first major role, the title role of Verdi's "Aida", with Utah Opera in January 1980. She returned to Utah Opera in early 1981 to perform the role of Santuzza in Mascagni's "Cavalleria Rusticana". Millo moved to New York City and auditioned for the New York City Opera where her Father had sung from 1942–1946 and was offered a contract with several roles. The Metropolitan Opera also offered the young singer at 22 years old, to become a member
Mildred Miller Met was on December 3, 1974 as Lola in "Cavalleria rusticana" with Elinor Ross as Santuzza, Harry Theyard as Turiddu, and John Nelson conducting. While performing at the Met, Miller also appeared as a guest artist on the stages of many opera houses throughout the world. She was a frequent performer at the Opern- und Schauspielhaus Frankfurt from 1959-1973. She also made appearances at the San Francisco Opera, Lyric Opera of Chicago, Cincinnati Opera, San Antonio Grand Opera Festival, Pittsburgh Opera, Kansas City Opera, Fort Worth Opera, and Opera Pasadena. She was a busy recitalist as well, appearing in concerts