Backed by three superloud, supertight electro-drummers and a backing singer, Tempest turned out to be indeed a mighty storm. Were there a Mercury for swearing, it would adorn her mantelpiece right now. She was mostly fuelled by raw, bewildered anger, whether claiming that “for 12 years I’ve been busking around food bins at festivals” or declaring “you don’t have to be pretty and sexy and sing someone else’s lyrics to be a woman on stage”. If it’s passion and intensity you’re looking for, the former Kate Calvert is your woman.