Thorne pursued further studies at the
Curtis Institute of Music where she was a pupil of
Harriet van Emden in the 1935–1936 academic year. On December 9, 1936 she sang three songs by
Franz Liszt on a Philadelphia radio program dedicated to featuring Curtis students. That same day she gave a recital at the Sylvania Hotel in Philadelphia. By the 1937–1938 academic year she was a voice student of
Estelle Liebling at Curtis. She graduated from Curtis on May 17, 1938. After her graduation she continued to be involved with Curtis, notably singing on a Curtis radio broadcast on
CBS Radio on October 31, 1938 in which she performed music by
Giacomo Puccini,
Antonio Guarnieri,
Félix Fourdrain,
Mary Evelene Calbreath,
Gustave Charpentier, and
Sergei Rachmaninoff. While a student at Curtis she sang the part of the Widow in
Felix Mendelssohn's
Elijah given in performances on multiple Sunday afternoons at the Second Presbyterian Church in Philadelphia in October 1936, and repeated that work at the
First Baptist Church in Philadelphia the following December. She previously had worked as a soloist in other oratorios given at the Second Presbyterian Church under the music direction of
Alexander McCurdy in the 1930s, including Brahms'
A German Requiem,
Gioachino Rossini's
Stabat Mater, and
Johann Sebastian Bach's
St Matthew Passion. She continued to perform works under McCurdy at the Second Presbyterian Church, including working as the soprano soloist in Bach's
Ein feste Burg ist unser Gott, BWV 80 (November 1938),
Richard Purvis's
Mass of Saint Nicholas (March 1940),
Frances McCollin's
Sleep, Holy babe (December 1940 and December 1942), and Verdi's
Requiem (April 1943). In the late 1930s, Thorne was a contracted singer at
WCAU radio in Philadelphia and was utilized by the station on a variety of different programs. In January 1939 she made her professional opera debut at the
Academy of Music with
Sylvan Levin's
Philadelphia Opera Company (POC) as Mimì in
Giacomo Puccini's
La bohème with
Fritz Krueger as Rodolfo and
Frances Greer as Musetta. She performed with that company again the following April in the title role of Puccini's
Suor Angelica with
Elsie MacFarlane as The Princess. She continued to perform with the POC, appearing as Violetta in
La traviata (1940), Micaëla in
Carmen (1940), Marie (Americanization of Mařenka) in
The Bartered Bride (1940), Mimì (1941), and Lia in ''
L'enfant prodigue'' (1941). In October 1938 Thorne was the soloist in a concert sponsored by the Adath Jeshurun Women's Association of the Congregation Adath Jeshurun in
Elkins Park, Pennsylvania. On April 20, 1939 she was the soprano soloist in
Wolfgang Amadeus Mozart's
Requiem with the
Philadelphia Orchestra at the Academy of Music; a performance recorded live for
RCA Victor. In December 1941 she portrayed Frasquita in
Carmen with the Trenton Opera Association at the
Trenton War Memorial with Carolina Segrera in the title role and
Raoul Jobin as Don Jose. In May 1940 Thorne was the soloist in Bach's
Trauerode at the Philadelphia Bach Cantata Festival under the direction of
James Allan Dash. The following October she joined the voice faculty of the Granoff Music Studios on Chestnut St. By 1942 Thorne was working as the resident soprano soloist at the
First Baptist Church in Philadelphia. That year she starred in a touring production of
La traviata with
Giorgio D'Andria's National Opera Company. On March 25, 1942 she was the soprano soloist in Bach's
St Matthew Passion at the
Church of the Divine Paternity in New York. In July 1942 she gave a recital at the Young People's Temple in
Ocean Grove, New Jersey with tenor Fritz Krueger. On December 27, 1942 she performed the world premiere of
Lazare Saminsky's
Rye Septet at a concert presented by the
League of Composers in New York. She was a guest soloist with
Syracuse University's chorus for their 1943 spring concert. In 1945 and 1946 she once again performed as a soloist under James Allan Dash in oratorios with the Philadelphia Bach Festival Chorus and 70 members of the Philadelphia Orchestra accompanying. ==New York, Texas, and beyond==