Ward 21 are group of dancehall musicians and producers hailing from Kingston, Jamaica, named for the psychiatric ward at the University Hospital of the West Indies in Kingston. Ward 21 are renowned producers and have created hit dancehall riddims like "Badda badda", "Da Joint", "Bellyas", and "Volume" as well as hit singles like "Haters" and "Judgement Day". In 2005, the group went on a tour through Europe, playing shows in Belgium, The Netherlands, Germany, Romania, Switzerland, Italy and Spain. They also performed at Europe's biggest reggae festival, Summerjam, later that year.
In addition to countless singles (released mostly on King Jammy's label) and tracks on compilations, Ward 21 have released three albums on the reggae label Greensleeves. The band had participated in 311's remix of Amber song in Supa Dups Remix. They also appear on Major Lazer's second album "Free the Universe", on the track 'Mashup the Dance'.