Possible Clues:

• This person holds holy books before start of the anthem
• Sacred polyphonic song
• Opera house introduces old time musical piece
• Sacred piece of spiritual symbol with ends transposed
• Invoice for a totem?
• Got together catching old time musical composition
• Totem (anag) ? anthem
• Piece of music on a religious subject
• Religious choral composition
• Piece of music to be played back inside, late tomorrow