The 50th anniversary of a mining disaster in Wales, is about to have its New Zealand premiere.  Sir Karl Jenkins wrote Cantata Memoria - For the Children of Aberfan.  That's where a dislodged mountain of mine waste engulfed a primary school, killing 116 children and 28 adults.  "Benedictus" from The Armed Man, which is being dedicated to the victims and families of the Pike River mine disaster.