| 554. Marcus Baylor | Drums | 1 |
| 554. Marcus Choi | Vocals | 1 |
| 554. Marcus Clayton Paul | Trumpet | 1 |
| 554. Marcus Grant | Marimba | 1 |
| 554. Marcus Hubbard | Trumpet | 1 |
| 554. Marcus Johnson | Vocals | 1 |
| 554. Marcus Jones | Drums | 1 |
| 554. Marcus Machado | Guitar | 1 |
| 554. Marcus Machado (guitar) | Musician | 1 |
| 554. Marcus Mumford | Guitar, Vocals | 1 |
| 554. Marcus Paul | Trumpet | 1 |
| 554. Marcus Phillips | Bass, Keys | 1 |
| 554. Marcus Reddick | Bass | 1 |
| 554. Marcus Semaj | Vocals | 1 |
| 554. Marcus Strickland | Bass Clarinet, Tenor Sax | 1 |
| 554. Marcus Sugg | Vocals | 1 |
| 554. Marcus Tenney | Trumpet | 1 |
| 554. Margaret Glaspy | Featured Artist | 1 |
| 554. Margaux Bouchegnies | Electric Bass | 1 |
| 554. Margo Price | Guitar, Vocals | 1 |
| 554. Margo Price & Jeremy Ivey | Featured Artist | 1 |
| 554. Mari Estrada | Vocals | 1 |
| 554. Maria Castro | Background Vocals, Drum Kit | 1 |
| 554. Maria Christina Jasmin Kopp | Background Vocals | 1 |
| 554. Maria Gadú | Vocals | 1 |