Possible Clues:

• Like the Pledge of Allegiance
• Told from memory
• That's said to have been learned
• A hundred of it in a rush for a repeater
• 'Told to have the building somewhere, perhaps (7)'
• Said to be placed afresh, by the sound of it
• It gets spoken in the Creed
• Listed from memory
• Was a speaker heard in another place?
• Spoke lyrics to audience before playing