| ID | Interpret | Skladba | Album | |
| 1. | otto e mezzo extrait | otto e mezzo extrait | |  |
| 2. | G.F.Handel | Mezzo Soprano Arias for mezzo soprano & piano | VSM audio files | |
| 3. | G.F.Handel | Mezzo Soprano Arias for mezzo soprano & piano | VSM audio files | |
| 4. | Gek | Mezzo Secolo Fa | Note Internazionaliste | |
| 5. | Burning Star Core | Mezzo Forte | Challenger | |
| 6. | Alexey | Mezzo Forte 1 | | |
| 7. | Alexey | Mezzo Forte 1 | | |
| 8. | Daniel Brown, piano | Aria di Mezzo Carattere | Mystic Awakening | |
| 9. | Era | Enae Volare Mezzo | Era |   |
| 10. | Kadmium and Jim Grey | Aria da Mezzo Carattrere | Dwelling of Duels April 2008 - Free Month | |
| 11. | DragonAvenger, Georgasmaster | Aria de Mezzo Carettere | | |
| 12. | Era | Enae Volare mezzo | Era | |
| 13. | Kadmium, Jim Grey | Aria da Mezzo Carattrere | DoD08-04: Free Month | |
| 14. | Era | Enae Volare Mezzo | Era [1998] | |
| 15. | Benjamin Blümchen & Otto | Sex mit Otto...? | Benjamin Blümchen | |
| 16. | Blue Skies For Black Hearts | Otto | Love Is Not Enough | |
| 17. | Graduate School of Journalism | otto | Columbia University | |
| 18. | Emmanuel Sikora | Introduction to Songs for Mezzo-Soprano | Music of Emmanuel Sikora - September 30, 2007 | |
| 19. | Emmanuel Sikora | Introduction to Songs for Mezzo-Soprano | Music of Emmanuel Sikora - September 30, 2007 | |
| 20. | Pro Audio | Otto and Darlene | Saturday We're Even | |
| 21. | Howard Pyle | 11 - How Otto was Saved | Otto of the Silver Hand | |
| 22. | Hans Mortelmans & groep | Otto Lilienthal | Wielen © Wild Boar Music 2007 | |
| 23. | Hans Mortelmans & groep | Otto Lilienthal | Wielen © Wild Boar Music 2007 | |
| 24. | Howard Pyle | 11 - How Otto was Saved | Otto of the Silver Hand | |
| 25. | Dr. Michael Otto | Dr. Michael Otto | Dr. Michael Otto | |
| 26. | Dr. Michael Otto | Dr. Michael Otto | Dr. Michael Otto | |
| 27. | crt | Otto-matic 1 | | |
| 28. | DragonAvenger, Georgasmaster | Final Fantasy VI Aria de Mezzo Carettere | www.rpgamer.com | |
| 29. | IV. Ode Anacreonitique, Allegro Energico | Four Songs For Mezzo-Soprano And Chamber Ensemble | Ethel Smyth: Chamber Music And Lieder, Volume III | |
| 30. | IV. Ode Anacreonitique, Allegro Energico | Four Songs For Mezzo-Soprano And Chamber Ensemble | Ethel Smyth: Chamber Music And Lieder, Volume III | |
