Historical clue formulations

• Line in a song — 2025-09-02
• Line at a karaoke bar — 2023-02-05
• Line of a song — 2022-03-08
• A mondegreen is a misheard one — 2020-04-22
• Song snippet — 2019-11-18
• Kind of poem — 2016-03-13
• Number line — 2014-11-08
• Words that are rarely spoken — 2014-09-13
• Part of songwriting — 2010-12-12
• Like much poetry — 2010-07-07
• Part of a number — 2009-06-20
• With 39-Across, 21-/28-Across, for one — 2007-08-01
• Ira Gershwin's contribution — 2000-03-28
• Full of feeling — 1999-06-13
• Words — 1994-09-11