Possible Clues:

• Rules the singer breaks
• They rule the gee-gees, by the sound of them
• What His Majesty does precipitates things, by the sound of it
• As a rule it sounds as if it's wet
• Rules over as monarch
• By the sound of it, it's not so fine as a rule
• Rules as sovereign
• Sound as it they're wet as a rule
• That does not sound at all so fine as a rule
• As a rule that's what it always seems to do in Ireland, by the sound of it