Liturgical Books and Plainchant Sources
David Hiley
Abstract The books in which the plainchant has been recorded since Carolingian times are diverse nature and complex content. This is chiefly because different contain material for parts of liturgical round use personages involved celebration. possible combinations quite numerous, at places a multitude selections have made. Some important distinctions should be borne mind are: between containing texts music to recited or sung, instructions as how liturgy celebrated;
Oxford University Press eBooks