The Bristol Ensemble, formerly the Emerald Ensemble, is a professional chamber orchestra, based in Bristol, England. The ensemble has been in existence since 1994, when it was formed as a musicians' collective by violinist Roger Huckle. Their repertoire includes classical, popular, jazz and contemporary music. The size of the group depends on the programmes being performed and can range from trios to a full complement of 70 or so musicians. They perform standing up.