Mark Anthony Clair, known as Marc Mac, is a British DJ, broadcaster, producer, promoter and label owner in the UK dance music scene who was influential in shaping dance music of the 1990s. Mac has been instrumental in a number of genres including breakbeat hardcore, jungle, drum and bass, downtempo, broken beat and nu jazz. He is one half of the group 4hero, founded in partnership with collaborator Dego, and a co-founder of Reinforced Records. Mac's other solo projects include The Visioneers (jazz/hip-hop), Manix, Nu Era (techno), and Nature's Plan (Afro-Latin).