| Clue | Source | Date |
|---|---|---|
| Otto -, orchestral conductor; composer of operas Eros and Wehen (9) | Mirror Quiz | 23 Jul 2025 |
| King and Queen no longer welcoming German singer and German conductor (9) | ||
| Otto _ German conductor and composer born in 1885 (9) | ||
| Otto, German-born American conductor and composer, d. 1973 | The Guardian Quick | 14 Jun 2022 |
| 10 Otto at Kuala Lumpur with sovereign ruler, reportedly | ||
| Otto --, conductor born in Breslau (1885-1973) | The Telegraph General Knowledge | 21 Sep 2020 |
| Conductor Otto | ||
| Otto or Werner |