| 596. Maria Reis | Background Vocals, Keys | 1 |
| 596. Maria Taylor | Featured Artist | 1 |
| 596. Maria Telesheva | Accordion | 1 |
| 596. Maria Volonte | Featured Artist | 1 |
| 596. Mariachi El Bronx | Featured Artist | 1 |
| 596. Mariachi Flor De Toloache | Featured Artist | 1 |
| 596. Mariah Bernard | Background Vocals | 1 |
| 596. Mariah Meshae | Background Vocals | 1 |
| 596. Marian Li-Pino | Drums | 1 |
| 596. Marian McLaughlin NPR | Featured Artist | 1 |
| 596. Marianne Khattar | Vocals | 1 |
| 596. Marie Bérard | Violin | 1 |
| 596. Marie Ulven | Guitar, Vocals | 1 |
| 596. Mariella Price | Vocals | 1 |
| 596. Marika Clark | Vocals | 1 |
| 596. Marilena Umuhoza Delli | Spokesperson, Translator | 1 |
| 596. Marina Albero | Keys, Soundscape | 1 |
| 596. Marina Arrufat | Strings | 1 |
| 596. Marina Carmona | Vocals | 1 |
| 596. Mario Callender | Keys | 1 |
| 596. Mario Castro | Keyboards, Tenor Sax | 1 |
| 596. Mario Gabriel Mesa Meriño "Machete" | Percussion | 1 |
| 596. Mariola Orellana | Vocals | 1 |
| 596. Marisa Anderson | Featured Artist | 1 |
| 596. Marit Schmidt | Viola, Vocals | 1 |