Soyung Yu recieved first prize in 1987 when she sang in the singing competition of the Korean Ministry of culture Seoul.

In 1991, Soyung Yu went to Vienna, where she continued her studies at the University of Music and Performing Arts with Prof. Ralf Döring and completed her training in the opera class with Prof. Curt Malm and the song class with Prof. Norman Shetler.

In 1995, Soyung Yu won the Emmi Destin singing competition in České Budějovice in the Czech Republic, where she also received a special prize from the city of České Budějovice. During her studies, she had numerous solo performances and orchestral concerts in Germany, Hungary, Korea and Austria.

In 1998, Soyung Yu had her opera debut at the Vienna Opera Theater, where she sang with great success the role of Chiang Ching in John Adams opera "Nixon in China". In 2008, she performed in the same role at the Teatro Filarmonico Verona. In 1999, she sang at the Vienna Volksoper in Bejamin's opera "Eine Sommernachtstraum".

In February 2000 Soyung Yu performed at the Romanian National Opera in Cluj as Despina in Mozart's "Cosi fan tutte" and as Michaela in Bizet's "Carmen”.

In Seoul, Korea, Soyung Yu sang the Lisetta in Haydn's opera "La Constance", at the Taegu Opera Festival in Korea in Cimarosa's opera "Il Matrimonio Secreto" and Mozart's "The Magic Flute" and in Wiltz, Luxembourg in contemporary Korean opera "Baeknokdam". In the summer of 2008 she sang the role of the priestess in Verdi's "Aida" in Leipzig, Wittenberg and Rostock.

Since 2002 Soyung Yu started her collaboration with CMS Vienna Internationl, Soyung Yu performed in hundreds of concerts  all over the world:

 
•    Romania, Bucharest Atheneum, Oltenia Philarmony from Craiova, Banatul Philarmony from Timisoara, National State Philarmony from Tirgu Mures, National State Philarmony from Oradea and National Pitesti Philharmony, etc
•    Hungary, cooperation with Debrecen Music University, and Liszt Hall Debrecen
•    Czech Republic, cooperation with Janacek Philarmonie from Ostrava, Rudolfinum Dvorak Hall from Prague, Music Universsity from Olomouc, Bohuslav Martinu Philarmony from Zlin,
•    Spain, cooperation with Luigi Bocherini choir from Boadila del Monte Madrid, concerts in Barcelona, Sevilla, Palau Altea Murcia, etc
•    Italy, Rome Santa Cecilia Hall, Milano, Merano, etc
•    South America, North America
•    Poland, Katowice Philarmony, Torun Philarmony,
•    Austria, Musikverein Vienna, Mozarteum Hall Vienna, Vienna Konzerthaus, Salzburg, Insbruck, Linz
•    South Korea, Art Center Seoul, Sejong Art Hall, Jeju Philarmony, Sowon Philarmony, etc
•    Ukraine, NSOU Kiev
•    Bulgary, National Philarmony from Sofia.
•    Member of Jury International Singing competition.