Born to a prominent family in Newark, New Jersey, Suzy was a daughter of Frederick Frelinghuysen and his wife Estelle B. Kinney, who were married in 1902. She descended from various politicians, including her grandfather, Frederick T. Frelinghuysen, and her great-great-uncle, Theodore Frelinghuysen. She was educated at Miss Fine's school in Princeton, and later studied voice. She displayed an early interest in painting and drawing but never undertook formal art studies. She attended Miss Fines in Princeton and was separately tutored in art and music all the time making childhood trips to Europe. On January 30, 1935 she married Morris who was encouraging to her artistic career.
Artistic career
Painting
Her paintings were done in a realist style until the time of her marriage to abstract painter and collector George L.K. Morris in 1935. Morris introduced her to the work of European modernists like Pablo Picasso, Fernand Léger, Georges Braque, and Juan Gris, which inspired her to explore a more abstract Cubist manner. In April she joined the American Abstract Artists which was an organization concerned with the Museum of Modern Art focusing mainly on American Scene Artists. In 1938 she became the first woman to have a painting placed in the permanent collection of A.E. Gallatin's Museum of Living Art. She and Morris were founding members of the American Abstract Artists. She took part, in Paris, at the Salon des Réalités Nouvelles, and exhibited also in Rome and Amsterdam. From 1938 to 1946, Suzy was most successful exhibiting her artwork in Gallitan’s Museum of Living Art, exhibition of the Park Avenue Artists which traveled to Chicago, San Francisco, and Honolulu, a show created by Peggy Guggenheim, and Philadelphia Museum of Art in the show Eight by Eight: American Abstract Painting since 1940. By 1947, that can be marked as the end of her painting career as she moved onto her singing career. In 1943, Frelinghuysen's work was included in Peggy Guggenheim's show Exhibition by 31 Women at the Art of This Century gallery in New York.
Opera
As Suzy Morris, the dramatic soprano appeared with the New York City Opera from 1947 to 1950, in Ariadne auf Naxos, Cavalleria rusticana, Tosca, Aïda, and Les contes d'Hoffmann. Following that last appearance with the City Opera, she debuted in 1950 with the New Orleans Opera Association, as Amelia in Un ballo in maschera. That performance, which was broadcast, also featured Jussi Björling, Marko Rothmüller, Martha Larrimore, the young Norman Treigle, as well as Audrey Schuh. In 1998, VAI released this performance on compact disc. After a 1951 bout of bronchitis, the soprano retired from the stage, and once more became a full-time painter.
