Theater Faculty

Theresa Ohanian

Theater (MFA)

Theresa Marie Ohanian is an Actor and Director working out of the US, Canada, and the UK.  She graduated with an MFA in Acting, Directing and Creating in 2017 from York University in Toronto, Ontario.  Theresa is currently a Professor of Voice, Performance, and Theory at George Mason University in Fairfax, VA.  She loves watching her Harmonia Kiddos grow and succeed through the arts and believes that Art, in all its forms, is intrinsic to a full, well-rounded student.

Shelley Siller

Theater Choreography

Shelley Siller has taught, choreographed, and danced in the DC metro area for 12 years. She holds her Advanced Professional Cecchetti Ballet student certification, along with Grade III teachers certification. Shelley’s choreography has received high praise at prestigious student competitions such as Dance Masters of America and Starpower, and her work with professional dance companies MOVEiUS Contemporary Ballet and fusiondance received glowing reviews in the Washington Post and popular theater blogs online. In 2017, Shelley’s solo choreography was first presented internationally in Scotland and Guatemala. Shelley has performed at many notable Washington venues including the Filene Center at Wolftrap, the Howard Theater, and most recently at the Kennedy Center as a guest artist with Company E.

Sonia Yon

Voice, Theater (BM, MM)

Ms. Sonia H. Yon graduated with Bachelors of Music from Seoul National University, Seoul, Korea and Masters of Music from Milano Giuseppe Verdi Conservatorio di Music, Milan, Italy.

She started singing at age three and gave her first singing performance at the age of five, the same age she began studying piano.  She appreciates her mother for supporting her early start in music. When she was in Italy, she won many international competitions. She received 1st prize at the Flaviano Labo international competition, and 3rd prize at the Mario Basiola international competition;  she also won prizes at Imperia, Katia Ricciarelli, Vinas, Viotti, Angelica Catalani international competitions in Italy.

Ms. Sonia H. Yon has performed in main role in many operas, such as Madama Butterfly, La Boheme, La Traviata, Un Ballo in Maschera, Il Trovatore, La forza del Destino, Tosca, Don Carlo, Requiem, Sour Angelica, Manon Lescaut, Anna Bolena, and Il Corsaro in Italy and South Korea. She also performed in the opera Magic Flute in Vienna, Austria. She performed over 500 concerts in New York, Fairfax and many cities in Europe and South Korea.

Ms. Yon has 18 years of teaching experiences. She was an adjunct professor in South Korea for seven years. She taught Voice, Piano, Italian diction, and Opera Theater. She has been a church choir conductor for over 15 years, which has given her excellent understanding of the dynamics of group singing.

Ms. Sonia H. Yon has been giving lessons in the traditional Bel Canto technique to professional singers, as well as high school students who are going on to major in vocal music. She is able to teach Italian songs, German songs, French songs, and any kind of Opera scores and Broadway songs. Moreover, she is enjoying teaching Musical Theatre based on her profound opera experiences. Ms. Yon absolutely loves children, and delights in seeing their musical growth and progress.