Possible Clues:

• Vocally not up in this in gin
• 'Singing, but not in gin (8)'
• Chanting
• Some sprint on in game, repeating mantra?
• Chanting starts in third over during part of game
• Reciting like a chant
• Mentioning changes without me singing
• Reciting with a flat voice
• Reading without emotion
• In such a weight, gin has one in song