No professional choir has a higher profile than The Sixteen, which tours nine months of the year to half the cathedrals of Britain, performs in four continents, runs an education programme for thousands of children and adults, holds courses under the title “Genesis Sixteen” (named for the Genesis foundation, which funds the programme) specifically to train the next generation of career ensemble singers and researches new repertoire that it delivers to its many fans through concerts and its own record label, Coro. The latest project is a series of discs dedicated to the church music of the Polish baroque, a gorgeously diverse repertoire now emerging from centuries of neglect. The Communists hid it, condemned it, ignored it, but fortunately did not destroy it. The recently rele