An incompletely preserved musical manuscript from the 11th century, written in the monastery of St. Gall, with added supplementary leaves up to around 1400. Contains a Tropary, a Versiculary and a Sequentiary.
About Matthew Frederes
Mr. Frederes is a software engineer, pilot, served as an organist for 31 years, and directed small parish choirs/scholas for 22 years. He and his wife have 12 children. —(Read full biography).
