| Clue | Source | Date |
|---|---|---|
| Basic tonality | Newsday | 29 Mar 2025 |
| Early topic in music theory | LA Times Daily | 18 Oct 2024 |
| “Imagine” is in it | Wall Street Journal | 10 Oct 2020 |
| It has no flats or sharps | Wall Street Journal | 13 Jul 2020 |
| This has no sharps or flats | The Washington Post | 03 Jan 2017 |
| It has no sharps or flats | Eugene Sheffer | 27 Sep 2016 |
| It has an all-white scale | ||
| It has an all-white scale | ||
| It has no sharps or flats, with "the" | ||
| It has no sharps or flats, with "the" | ||
| It has no flats or sharps | ||
| It has no sharps or flats |