[1] Jung Jae-hyung was born in Seoul and graduated from Hanyang University's College of Music, with a major in composition.

He made his debut in K-pop in 1995 as part of the group 'Basis' (베이시스) with his college classmates.

From March 4, 2012, with the all-time top K-pop star Lee Hyori, Jung has been hosting the music show Jung Jae-hyung & Lee Hyo-ri's You and I on SBS.

he worked as the waiting room MC on the music competition program Immortal Songs: Singing the Legend alongside Eun Ji-won (2013–2014), Yoon Min-soo (2015–2016), Hwang Chi-yeul (2017–2018), Moon Hee-joon (2012–2020), and Kim Tae-woo (2018–2020), before leaving the show after 8 years, on August 22, 2020.

In December 2021, Jung is the music director for the exhibition 'Henri Matisse: Life and Joy' and introduces new songs.