Park Gyu Jung is part of a famous South Korea music producer and composing duo named "Groovy Room" under H1GHR MUSIC. They made their debut on 25th February 2015 with Oltii's album called Graduation. They have this well known trademark / EP (Extend Play), "Groovy Everywhere" which's released back in 2017 July 24th. They have made countless of popular song and work with the famous artists such as Jay Park, Cheetah, Dok 2, Park Kyung (Block B) , Babylon, Sik-K, Mad Clown, Hyolyn (ex- Sistar), One, Heize, Minzy, and many more.

In 2018, they made their appearence on a hip hop survival show "High School Rapper Season 2" as the mentors and producer team with Kim Haon and Lee Byung Jae (Vixen) who won the 1st and 3rd place.

He left H1GHR MUSIC alongside Hwi Min after their contract ended in 2022.