| Type | Electronic keyboard instrument |
| Inventor | |
| Popularity | Rare and not widely known |
| Predecessor | |
| Country of origin | |
| Year of invention | Early 1900s |
| Distinctive timbre | Unique, ghostly, and otherworldly |
| Comparison to other instruments | Less popular than the Ondes-Martenot in our reality |
| Compositions featuring Aetheria | Ghostly Serenade by Hans Zimmer • Ethereal Journey by John Williams |
