The Catholic Church in the north of France, especially in the Normandy and Picardy areas, had a very rich liturgical tradition. It certainly gives us an idea of what it must have been like to go to Mass in Salisbury Cathedral in the early 16th century. Here is a site with some mind-blowing views of Mass in Amiens Cathedral – Serpentists In Charles Wild's The Choir of the Cathedral of Amiens (France) (ca. 1826). This site deals particularly with a musical instrument for intoning liturgical chants, the serpent, which works like a brass instrument (trumpet, trombone, etc.). The paintings of the solemn Mass in the presence of the Bishop in his stall in Amiens Cathedral are stunning. Here is one of the pictures (reduced size) on this site.