SAINT BIRGIT'S MONASTERY , a center for both literary and musical creativity in Naantali, near Turku. It was founded on August 28, 1438, and accommodated both monks and nuns. No mention is made in the books of an official cantor or cantrix, although one of the nuns was known as a singer.
Among the most notable liturgical books containing sequences written for, or used in, the Turku diocese are the Codex Kumoensis (Kokemäki), the Graduale Uskelense (Uskela), and the Graduale Ilmolense...