Jae-Chang, Sung received a bachelors degree in the trumpet from Seoul National University and also graduated from the Malmö Academy of Music in Sweden where he studied with Håkan Hardenberger and Bo Nilsson. Inspired by such achievements, he successfully pursued a Meisterklasse in the trumpet with the highest honours after studying with Prof. Hannes Laübin from the Hochschule für Musik und Theater München in Germany. Furthermore, through actively seeking to display his talent for the trumpet, he won a number of competitions, such as the 27th Japan Wind and Percussion Competition, the 5th Jeju International Brass competition, and the 42nd Dong-A Music competition. Presently, he is working in Seoul National University College of Music as a valued and talented professor. Prior to taking up this post, he was a Professor at Chungnam National University, and played sub-principal trumpet in the Finnish National Opera in Finland, also the Theater Regensburg in Germany.