Historical clue formulations

• Plumbing conduits — 2026-08-24
• Vocal cords, informally — 2026-05-25
• Puff pieces? — 2017-08-15
• Singing ability, informally — 2017-07-14
• Plumbing, largely — 2013-08-19
• Singing ability, informally — 2012-08-21
• Vocal skill, informally — 2012-07-06
• Water bearers — 2009-06-27
• Kiltie's instrument — 2009-06-17
• Singer's gift, colloquially — 2009-06-12
• The singing voice, informally — 2007-09-07
• Drain connections — 2006-10-05
• Church organ features — 2005-09-26
• Organ features — 2002-05-27
• Vocal cords, informally — 2002-03-14