Gothic musical Jekyll and Hyde the Musical swept the Sherman Theatre for two nights earlier this June, bringing the award-winning cult classic musical phenomenon to Cardiff. Loosely based on the original novel by Robert Louis Stevenson, the theatrical adaptation is written by double Oscar and Grammy-winning Leslie Bricusse, featuring a tracklist of lively pop rock hits from multi-Grammy and Tony-nominated Frank Wildhorn. Director Kevin McCurdy presents the amateur production by arrangement with Music Theatre International. The production pulls off…