A pianist from South Korea, Young Sun Choi got the first prize and the audience prize with two other special prizes at the 26th Rina Sala Gallo Monza International Piano Competition. She has claimed top honors in prestigious competitions such as the Gurwitz International Piano Competition (previously, San Antonio International Piano Competition), the Bösendorfer USASU International Piano Competition, American International Paderewski Piano Competition, and Lyon International Piano Competition.

     Choi has performed concertos with orchestras worldwide, including the Mexico City Philharmonic Orchestra, Sinfonica di Milano, KBS Symphony Orchestra, Prime Philharmonic Orchestra, Orchestra "O. Stillo", Kazan Chamber Orchestra "La Primavera," and the Indiana University Symphony Orchestra. She has played under the baton of great conductors including Kolja Blacher, Thomas Wilkins, Scott Yoo, and YunSung Chang.

     In 2023, Choi was invited by the Paderewski Festival in North Carolina with Martin Garcia Garcia, Hyuk Lee, Mateusz Krzyzowski, and Maria Stratigou. She was invited by Fazioli Pianoforti to perform Winners Series Concert.

     As an avid chamber musician, she has her piano trio, Trio Unio which includes violinist Eunji Kim and cellist Ah-Yeon Nam. Trio Unio has awarded second prize at the Franz Schubert and Modern Music International Chamber Music Competition in Graz, Austria. And they recently have been invited to perform by Samsung Electronics at their own concert hall.

     Choi's solo performances were aired through the Texas Public Radio and Arte TV. And Choi got an honor to be a dedicatee of 'Three Preludes for Piano" by a Grammy award winner composer Michael Fine. The published score is available on the Donemus Publishing website.

     She graduated from Yewon School, Seoul Arts High School, under the tutelage of Jung Won Moon. She got her bachelor’s degree in piano and musicology at Seoul National University, under the guidance of Aviram Reichert. Later, she attained a master's and doctoral degrees from Indiana University Jacobs School of Music, under the mentorship of Arnaldo Cohen. Additionally, Choi served as an associate instructor in the piano department at the Jacobs School of Music.