By Stephen Collins The three-piece orchestra plays Finnissy's score with exacting skill, quite beautifully. Unfortunately, their efforts are largely wasted as the score is lamentably irritating, repetitive and unengaging. Except for the moments when Puccini's music is to the fore, this is a score which has no warmth or charm. While there is a certain intellectual interest in the roots the score has in Naga-uta and Go…