Bill Kenwright brings another sensational show to the New Theatre: as the brilliant Willy Russell’s Blood Brothers lands with a bang, well a few loud bangs in fact. Gun blast that make you jump back in your seat, melodic voices that gain strength and emotion when they combine to form harmonies that could rival any power ballad. Yes, these combined with brilliant characterization and acting form the key elements that make the show a pure delight to watch. As…