Possible Clues:

• Amahl's creator
• 'Amahl and the Night Visitors' composer
• 'Amahl and the Night Visitors', an opera by Gian Carlo --
• Opera composer in motet version
• Scorer thus sent soldiers from the trenches, one concludes
• Chaps using it to come back to opera composer
• Composer hardly recognizable in motet
• "Amahl..." composer
• Pulitzer-winning composer of the opera "The Consul"
• Newspaper report about weight upset composer