Related Clues:

• Mormon Tabernacle feature
• Group singing together
• Large group of singers
• Religious chorus, perhaps
• Group of singers as in musicals
• Body of singers
• A group of singers, often in church
• Chorus in church
• Group of singers, often in church
• Organized group of singers
• They don't sound so low
• Invoices for a couple of dozen sheets, by the sound of it (5)
• That does not sound so low
• This does not sound altogether so low
• This invoice does not sound so low