| 2024-08-13 | Collaborations like those on "Ella and Louis" |
| 2022-09-17 | Relationship strains? |
| 2017-06-19 | Performances by two singers ... like 21- and 49-Across and 3- and 29-Down? |
| 2016-11-02 | All-time best-selling Frank Sinatra album (1993) |
| 2015-09-13 | Airs from pairs |
| 2015-04-30 | Two numbers? |
| 2014-01-23 | Triple-platinum Sinatra album |
| 2009-02-01 | 1993 triple-platinum Frank Sinatra album |
| 2004-12-01 | Soprano-bass combos, maybe |
| 2003-01-10 | 1993 Sinatra CD |
| 1999-10-24 | Shared airs |
| 1999-02-23 | Tenor-soprano combos, e.g. |
| 1998-03-26 | 1993 Sinatra album |
| 1994-07-06 | Some piano music |
| 1994-04-24 | 1993 Sinatra album |
| 1993-11-24 | Quartet after a breakup? |