Historical clue formulations

• Pitch-perfect — 2025-08-08
• Like quality vocals — 2025-08-03
• Well-pitched — 2025-04-18
• Harmonious, in a way — 2024-06-30
• Pitch-perfect — 2021-12-23
• How singers should sing — 2015-09-28
• Like good singing — 2015-04-24
• Pleasant to the ear, say — 2014-06-03
• Well-pitched — 2014-04-08
• Well-pitched — 2014-03-21
• Not at all sharp, maybe — 2013-08-24
• Perfectly pitched, musically — 2012-11-19
• Well-pitched — 2012-11-07
• Not flat, say — 2012-07-08
• Like a good singer — 2010-10-19
• Not sharp or flat — 2010-04-26
• Perfectly pitched — 2008-02-04
• In tune — 2006-09-05
• Pitch-perfect — 2006-04-26
• How to sing, ideally — 2003-03-17
• Pleasing to the ear — 2000-12-17
• Correctly sung — 2000-01-05
• Neither sharp nor flat — 1999-10-19
• Best way to sing — 1994-09-24