Miss Moon is still maintaining a presence in the United States after moving to Germany in 1986. She has sung with the New York City Opera (Pamina and Rose in Street Scene), Glimmerglass Opera (Marzelline in Fidelio), Portland Opera (Lucia di Lammermoor), Florentine Opera (Musetta and Antonia), Opera Columbus (Musetta, Countess and Donna Anna) and Cleveland Opera (Cleopatra and Gilda).

Sandra Moon made her Metropolitan Opera debut in 1997 in the role of Echo in Ariadne auf Naxos with James Levine conducting. She has since sung at the Met in roles such as Cleopatra in Händel's Giulio Cesare, Flower Maiden in Parsifal, and Zdenka next to Renee Fleming's Arabella.

While working in Europe, Sandra has been able to focus on baroque repertoire. She has sung in the Händel Festivals of Karlsruhe and Halle, as well as the Dresden Music Festival. Some of her baroque repertoire includes the Bach Passions, as well as the roles of Asteria in Tamerlano, Onoria in Amadigi, Fulvia in Ezio, and Emilia in Ferrandini's Catone in Utica which has recently been released on Oehms Classic CD.

At Munich's Gärtnerplatz Theater, where Miss Moon is currently engaged, she sings the roles of Violetta, Mimi, Suor Angelica, Antonia, Pamina, Konstanze, and Fiordiligi. In 2005, she made her Carnegie Hall debut with the role of Ännchen in Der Freischütz with Eve Queller and the Opera Orchestra of New York. Upcoming engagements in the US include Nedda in I Pagliacci with Lake Goerge Opera.

Ms. Moon is a native of Dayton, Ohio and received her musical training from the Cincinnati Conservatory of Music as well as the young artist programs of the Lyric Opera of Chicago and Santa Fe Opera.