| 596. Matthew Horton | Guitar | 1 |
| 596. Matthew Ramsey | Bass | 1 |
| 596. Matthew Rippetoe | Sax, Trumpet | 1 |
| 596. Matthew Romy | Keys | 1 |
| 596. Matthew Simms | Guitar | 1 |
| 596. Matthew Stoessel | Guitar, Pedal Steel | 1 |
| 596. Matthew Thudium | Guitar, Vocals | 1 |
| 596. Matty Meyer | Drums | 1 |
| 596. Maureen Dunne | Cello | 1 |
| 596. Maurice "Mighty Mo" Hagans | Percussion | 1 |
| 596. Maurice "Mobetta" Brown (trumpet) | Musician | 1 |
| 596. Maurice Fitzgerald | Bass | 1 |
| 596. Maurice Smith | Vocals | 1 |
| 596. Mauricio Guerrero, Jr | Guitar | 1 |
| 596. Mauricio Ramírez Echeverri | Drums | 1 |
| 596. Mauricio Zotarelli | Drums | 1 |
| 596. Mauro Refosco | Music Director, Percussion | 1 |
| 596. Maverick City Music | Featured Artist | 1 |
| 596. Mavis Staples | Featured Artist | 1 |
| 596. Mawuena Kodjovi | Backing Vocals, Bass | 1 |
| 596. Max Abrams | Saxophone | 1 |
| 596. Max Baca | Bajo Sexto, Vocals | 1 |
| 596. Max Bassin | Drums | 1 |
| 596. Max Bernstein | Guitar | 1 |
| 596. Max Brown | Guitar | 1 |