Kyung-Jun Kim was born in Anyang, Gyeonggi, South Korea.
His conclusion of eleven national music competitions in South Korea was the Complete Bach Sonatas for Violin Solo Recital at the Uijeongbu Arts Center.
[11] His winnings of top prizes and honors at the six international music competitions in Slovenia, Bulgaria, Malta, Italy, and North America in 2016 and 2017 led to[citation needed] an honorable mention with good results at the Rising Stars Grand Prix International Music Competition Berlin 2018.
In addition, he performed at the Metropolitan Museum of Art, the McGraw Hill Financial Young Artists Showcase, the Eugène Ysaÿe Sonatas recital, and the Amsterdam Airport Schiphol "Share your Talent" recital series.
Kim played the Antonio Stradivari "Lady Tannant" for a single special occasion concert and usually played the Guarneri School violin loaned from the Stradivari Society.