Possible Clues:

• Witty saying and French composition
• Encountered about to turn choral
• Came across an anthem about to come back
• Polyphonic song
• Far end of castle mound turned over reveals sacred piece
• Composition in US opera house embodying Holy Writ
• Sounds as if Polly might get on the phone back to Thomas to start this orally
• Sacred part-song
• A polyphonic form of totem
• Short sacred choral work