Coolrnch (Cool Ranch) is a Seoul-based DJ and record collector. He started DJing as a hobby when he was in middle school, and in 2021, he debuted on Seoul's local scene through Seoul Community Radio. He collects and plays records from various countries and genres that have bright energy, mainly focusing on 70s-80s disco, Italo disco, synth-pop, soul, funk, Balearic, 90s house, electro, and 90s trance. Overall, he pursues a set of music that makes anyone on his dancefloor feel comfortable and have fun, allowing people to be themselves and dance freely. He hosts a monthly show titled ‘Cool Ranch Discos’ on Visla FM, a local radio station in Seoul. As a member of ‘WorkHardPartyHarder’ and ‘Cha Cha Mambo’, a party label based in Seoul, he regularly organizes parties and plays music at various venues in the city. He has performed in various countries, including Bar Bridge Shinjuku (Tokyo), Kiosk Radio (Brussels), Bordello Aperitivo (Amsterdam), and HWK (London), and has recently expanded his activities overseas by playing at the Toy Tonics Italomania party in Berlin.