Possible Clues:

• Fall in pitch originally concerning gulf church
• Dance round in church, showing rhythm
• Dance off starts with coordinated entertaining and has a rhythmical effect
• Inflection of the voice
• One can cede that it's sound
• 'Sound off - one, two ...,' e.g.
• Metronome indication
• Fall in the pitch, by the sound of it
• Rotter enclosed note on rhythm
• Rotterness, perhaps, by the sound of it