Related Clues:

• Organ set
• They're calling Danny Boy
• Water bearers
• Plumbing conduits
• Drain connections
• Plumber's problems
• Droners on a brae, familiarly
• Water carriers
• Plumbing labyrinth
• Plumber's supplies
• Vocal cords, slangily
• Holmes smoked them
• Radiator problems
• Puff pieces?
• The singing voice, informally