[1] She studied music therapy at the University of the Pacific and received her bachelor's and master's degrees at the Juilliard School.
[1][4][5] Mentzer made her Metropolitan Opera debut in the role of Cherubino on January 4, 1989.
[6] Further roles she has sung at the Met include Octavian, Idamante, Nicklausse in Offenbach's Les Contes d'Hoffmann, the composer in Ariadne auf Naxos, Rosina in Rossini's Il barbiere di Siviglia, Dorabella in Mozart's Così fan tutte, Mélisande in Debussy's Pelléas et Mélisande, Meg Page in Verdi's Falstaff, Marcellina in The Marriage of Figaro.
[1] Besides the roles she has sung at the Metropolitan Opera, her operatic reportory includes Zerlina in Mozart's Don Giovanni, the title role of Rossini's La Cenerentola, Dido in Purcell's Dido and Aeneas, Adalgisa in Bellini's Norma and Jane Seymour in Donizetti's Anna Bolena.
[1] In addition to many audio recordings, Mentzer has appeared on television in performances of Le nozze di Figaro, Così fan tutte and the First Emperor and on DVDs in performances of Don Giovanni, Les Contes d'Hoffmann, The First Emperor and Mahler's Resurrection Symphony.