| Clue | Source | Date |
|---|---|---|
| Sing pleasantly as they transport half of that French article | ||
| Sing on key | USA Today | 12 Jul 2021 |
| Sing adequately | Newsday | 12 Apr 2015 |
| Sing adequately | ||
| Sing on key | ||
| Display one's ability to sing well | ||
| Sing on key | ||
| Sing satisfactorily | ||
| Sing well | ||
| Sing |