Jayyeah is the production alias of Cold Hart, an American music producer and artist from Long Beach, California. He has produced for prominent artists such as Sickboyrari, BONES, Lil Peep, Lil Tracy, and even Playboi Carti. He also served as the executive producer on Black Kray’s album Back to the Witchhouse.

He began his music career in the early 2010s, releasing instrumental projects under this alias amassing nearly 90 instrumental releases to date. In 2013, he joined underground music collectives TeamSESH and THRAXXHOUSE before co-founding the emo-rap collective GothBoiClique with Wicca Phase Springs Eternal and Horse Head later that year.