| 574. Rob Gueringer | Guitar | 1 |
| 574. Rob McCoury | Banjo | 1 |
| 574. Rob Pemberton | Bass, Piano, Vocals | 1 |
| 574. Rob Smoughton | Backing Vocals, Guitar | 1 |
| 574. Rob Stone | Background Vocals, Percussion, Saxophone | 1 |
| 574. Rob Trujillo | Musical Director | 1 |
| 574. Robbie Bennett | Keyboards | 1 |
| 574. Robbie Crowell | Bass | 1 |
| 574. Robbie Elias | Background Vocals | 1 |
| 574. Robbie Kuster | Drums | 1 |
| 574. Robbie McDonald | Guitar | 1 |
| 574. Robby Grant | Mellotron | 1 |
| 574. Robby Takac | Background Vocals, Bass | 1 |
| 574. Robert "Boogie" Bowles | Guitar | 1 |
| 574. Robert "Lord Finesse" Hall (emcee) | Musician | 1 |
| 574. Robert "Sput" Searight | Background Vocals, Drums, Percussion | 1 |
| 574. Robert Ackroyd | Guitar | 1 |
| 574. Robert Burger | Guitar, Keys | 1 |
| 574. Robert Cray | Featured Artist | 1 |
| 574. Robert Dillon | Musician | 1 |
| 574. Robert Ellis | Featured Artist | 1 |
| 574. Robert Glasper Experiment | Featured Artist | 1 |
| 574. Robert Gray (aka Robert Gotobed) | Drums | 1 |
| 574. Robert Hurst | Bass | 1 |
| 574. Robert Johnson | Drums | 1 |