Nicole Brook’s Obeah Opera is described as a “Nicole Brooks vision” which is probably a good starting point for an opera this isn’t. It’s an a capella stage piece with an all female cast, composed and taught to the performers orally and performed with mikes. If it resembles anything it’s a musical but really it’s a unique concept. It’s also clearly rooted in the oral traditions of African-American slavery and a kind of idealisation of the world they had left behind. For example, every slave women is a powerful sorceress from a long lineage rather as every Welshman is a gentleman who can trace his ancestry from King Arthur. It’s a musically rich and powerful tradition and this forms much the most effective element in the piece, especially as it’s where Brooks’ own talents and energy are most focussed.