Tony iommi the guitarist in black sabbath had wanted to give something back to his home town . He is friends with the dean of the cathedral and he sent her the music . The end product is based on a psalm and as well as the choir , there is cello , acoustic and electric guitar which is played sensitively . There was no stated religious impulse on the part of tony , though he and his wife were very appreciative for prayer offered during a health scare . It is available on line.