Frits de Jonge, Emeritus Professor, a graduate from the Utrecht Conservatory and the University of Iowa studied violin with Herman Salomon, Anselmo Zlatopolsky, and Charles Treger. He did post-graduate studies at the Royal Conservatory of Brussels under Maurice Raskin. He placed second in the 1960 Rio de Janeiro Violin Competition and served as concertmaster for several orchestras, including the Savannah (GA) Symphony, and for 20 years with the South Carolina Philharmonic Orchestra.

Professor de Jonge's violin and viola recitals include performances in New York at Carnegie Hall, Concertgebouw in Amsterdam, Wigmore Hall in London, Teatro Municipal in Rio de Janeiro, and the Seoul Arts Center in South Korea. As violin and viola soloist he has performed with orchestras in the USA, Europe, South America, and South Korea. His 1983 performance of the Bartok viola concerto with the S.C. Philharmonic Orchestra was the first performance in South Carolina, as was his performance of the same concerto with the Pusan Symphony Orchestra in Pusan, South Korea.

Professor de Jonge came to USC in 1968 teaching violin and viola. Until 1975, he was also conductor of the University Orchestra, performing over fifty concerts. Many of his students became winners and finalists in regional, national, and international contests, such as: Young Artist Competition, USC Concerto Aria Competition, MTNA Collegiate Artist Competition, and the 1991 William Primrose International Viola Competition. As a result, many of his students have performed as soloists with the SC Philharmonic and with the USC Symphony Orchestra. His master classes were included at the 4th (2000) Seoul International Music Festival. He adjudicated the 1982 MTNA High School and College finals and served as one of eight adjudicators for the 2000 International Violin and Viola Competition of the Republic of Kazakhstan.

Professor de Jonge retired in 2006.