A professional chamber choir formed and founded by former Westminster Cathedral chorister Nigel Short, Tenebrae made its first appearance in London in 2001. The group focused on medieval chant and renaissance pieces, but also took into account more contemporary source material for a new take on a very old sound. The group, whose members have backgrounds in some of the U.K.'s leading choral groups -- the Monteverdi Choir, the choir of Westminster Abbey, and the choirs of King's College, Oxbridge, for instance -- has toured all over the world and performed in such places as Spai...