As the laureate of the 2007 International Markneukirchen Violin Competition, and the 2007 Sion-Valais International Violin Competition, Sunmi Chang has performed widely and to acclaim throughout North America and Europe as a solo artist and chamber musician. In 2008, she was the soloist of the Asian Tour to Seoul, Beijing, and Shanghai with the Yale Philharmonia, performing the Beethoven Violin Concerto.
She started playing the violin at the age of seven with Professor Nam-Yun Kim in South Korea. Before starting her studies at the Yehudi Menuhin School in England in 1995, she had already won several national competitions including the Wol-Gan Music Competition, 20th Junior Korean Newspaper Competition, and Cho-Sun Daily Newspaper Competition. While studying at the Yehudi Mehuhin School in England, she performed regularly in concerts at Wigmore Hall, Queen Elizabeth Hall, Royal Albert Hall, and Purcell Room. In 1998 and 1999, she toured with the Yehudi Menuhin School orchestra playing Bach Double Concerto for two violins conducted by Lord Menuhin at the UNESCO Headquarter in Paris, Guilford Cathedral etc. After graduating from the YMS she went to Germany to continue pursuing a musical career and to study at the Hanns Eisler Musikhochschule in Berlin with Professor Eberhard Feltz. She has taken part in various summer festivals and master classes with Mauricio Fuks, Maya Glezarova, Felix Andrievsky, Zakhar Bron, Robert Masters, Zvi Zeitlin, Rainer Kussmaul, Boris Kuschnir, Igor Ozim, Midori, and Lord Menuhin.
As a chamber musician, Sunmi won the first prize at Plowman Chamber Music Competition and has collaborated with renowned artists including Kim Kashkashian, Donald Weilerstein, Atar Arad, Steven Taylor, Marcy Rosen, Edward Arron, Wu Han, and David Finckel. In 2006 and 2007, she was invited to take part in the Rising Stars Series at the Caramoor Chamber Music Festival, and in 2009 she was one of eleven international program artists for Music@Menlo, an internationally acclaimed chamber music festival and institute in the San Francisco Bay Area.
She completed her studies with Peter Oundjian and Ani Kavafian earning the Artist Diploma and the Master of Music degree at Yale University, where she won the School of Music Woolsey Hall Concerto Competition in 2006 performing the Bartok Violin Concerto No.2 with the Yale Philharmonia. She won a position in the Saint Paul Chamber Orchestra in 2009, which is the only full-time chamber orchestra in the United States. She was a full time tenured member of the orchestra from 2009 until 2015.
As well as being an active performer she is a dedicated teacher educating the next generation of young musicians. She has maintained an active teaching studio for over twenty years, teaching all levels of students. She was a faculty member at the Chamber Music Institute Program at Music@Menlo for many years and was also a board member and a judge of the Saint Paul Chamber Orchestra Youth Chamber Music Competition. In 2020, Sunmi completed a Doctor of Musical Arts in Violin Performance from the University of Michigan.
She plays on a Giulio Degani violin made in Venice in 1903.