Columbia subject headings:
Harvard subject headings:
Choruses, Sacred (Mixed voices), Unaccompanied.
Gregorian chants.
Kentigern, Saint, -approximately 612.--Songs and music.
Morning service music.
Rhymed offices.
Sacred vocal music--Scotland.
Princeton subject headings:
Chants.
Gregorian chants.
Kentigern, Saint, -approximately 612--Songs and music.
Rhymed offices.