LONGI
| Date | Clue |
|---|---|
| 2025-09-24 | What's heard exactly twice in a lifetime? |
| 2025-08-07 | Nighttime sound? |
| 2020-11-05 | White noise? |
| 2017-04-16 | Repeated part of a five-mile hike? |
| 2015-03-22 | Hi-fi sound? |
| 2012-11-03 | Sound of silence? |
| 2011-09-04 | End of July by the sound? |
| 2010-11-28 | Capital of Iceland? |
| 2010-09-22 | Second in line? |
| 2010-01-03 | iPod sound? |
| 2008-11-07 | Piece of pi? |
| 2003-05-01 | One of a finite pair? |