Related Clues:

• Something 'U.S.A.' may be part of
• Sound from a picket line
• Gregorian ___ (Middle Ages musical tradition)
• Mantra, often
• Arrangement of this music could leave creator hanging
• Feature of many a sit-in
• 22-Across like a monk
• Repeated phrase at a protest
• Informal discussion about mid-evening prayer?
• Football fans’ song
• Ashram sound
• Shout from the crowd
• Protesters' repeated shout
• *Italian red wine
• Gregorian __