| Clue | Source | Date |
|---|---|---|
| Perforated paper used for playing music | ||
| Old, cylindrical music collectible | ||
| Old, cylindrical music collectible | New York Times | 13 Jun 2018 |
| Input into machine issuing notes? | The Telegraph Toughie | 16 Apr 2015 |
| Perforated performance product | ||
| Holey music? | ||
| Holey music? |