Historical clue formulations

• Romance language? — 2024-11-23
• [aria-label] One gesture in 54-/65-Across — 2024-07-17
• Valentine line — 2024-04-03
• Thought expressed in American Sign Language by extending the pinkie, thumb and index finger — 2021-06-06
• *Valentine's Day message — 2015-06-08
• P.S. in a Beatles song — 2009-07-12
• Lyric sung three times in a row in the Beatles' "Michelle" — 2004-05-07
• Start of Barney's theme song — 1998-06-05