Most Appearances (Performer)
| Name | Role(s) | # |
|---|---|---|
| 541. Opal Hoyt | Vocals | 1 |
| 541. Open Mike Eagle | Sampler, Vocals | 1 |
| 541. Or Bareket | Bass | 1 |
| 541. Orestes Gómez | Percussion | 1 |
| 541. Oriana Aravena | Guitar | 1 |
| 541. Orla Gartland | Floor Tom, Guitar, Piano, Vocals | 1 |
| 541. Orlando Aispuro | Bajo Sexto, Guitars, Keys, Video | 1 |
| 541. Orlando Brinn | Keyboard | 1 |
| 541. Orowo "Roy" Ubiene | Keys | 1 |
| 541. Orowo Ubiene | Keys | 1 |
| 541. Osagyefo Sekou | Vocals | 1 |
| 541. Oscar Barrul | Palms, Vocals | 1 |
| 541. Oscar Convers | Bass | 1 |
| 541. Oscar Perez | Piano | 1 |
| 541. Oscar Ruiz. | Musician | 1 |
| 541. Oscar Trujillo | Background Vocals, Cello | 1 |
| 541. Osiris 'OTG' Wilson | DJ, Percussion, Vocals | 1 |
| 541. Osvaldo Fleites | Percussion, Trumpet | 1 |
| 541. Other Lives | Featured Artist | 1 |
| 541. Otis "Bdoc" Mensah | Bass | 1 |
| 541. Otis Calvin | Musician | 1 |
| 541. Otis Taylor | Featured Artist | 1 |
| 541. Otoboke Beaver | Featured Artist | 1 |
| 541. Otto Marloft | Keys | 1 |
| 541. Ouida | Vocals | 1 |