| 554. Marlon Martinez | Electric Bass | 1 |
| 554. Marlysse Simmons Argandoña | Organ, Piano | 1 |
| 554. Marques Walls | Drums | 1 |
| 554. Marquis Hill | Trumpet | 1 |
| 554. Marsha Ambrosius | Voice | 1 |
| 554. Marshall Vore | Drums, Vocals | 1 |
| 554. Marta Honer | Viola | 1 |
| 554. Marta Pereira da Costa | Guitar | 1 |
| 554. Marta Roma Tort | Cello | 1 |
| 554. Martha Wainwright | Featured Artist | 1 |
| 554. Martien Oyono | Violin | 1 |
| 554. Martin Beckerman | Percussion | 1 |
| 554. Martin Caro | Octapad, Percussion | 1 |
| 554. Martin Cella | Backing Vocals, Guitar, Percussion | 1 |
| 554. Martin D. Fowler | Bass, Guitar, Moog | 1 |
| 554. Martin Dybal | Guitar, Music Director | 1 |
| 554. Martin Hayes & Dennis Cahill | Featured Artist | 1 |
| 554. Martin Lawson | Bass | 1 |
| 554. Martin Luther | Background Vocals, Guitar | 1 |
| 554. Martin Luther McCoy | Vocals | 1 |
| 554. Martin Shore | Percussion | 1 |
| 554. Martin Velilla | Drums | 1 |
| 554. Martin “Harrison” Finks | Keys, Vocals | 1 |
| 554. Martinez | Clarinet | 1 |
| 554. Marty Stuart | Guitar, Mandolin, Vocals | 1 |