| Martinho da Vila | 1 | 1 |
| Martröð | 1 | 1 |
| Marty Paich Orchestra | 6 | 1 |
| Martyn Green | 1 | 1 |
| Marvin Tate | 1 | 1 |
| Mary Bergin | 1 | 1 |
| Mary Halvorson Octet | 1 | 1 |
| Mary Halvorson Septet | 1 | 1 |
| Mary Halvorson’s Code Girl | 1 | 1 |
| Mary J. Blige | 15 | 1 |
| Mary Lou Williams | 16 | 1 |
| Mary Margaret O’Hara | 1 | 1 |
| Mary McCaslin | 1 | 1 |
| Mary Thomas | 3 | 1 |
| Mary Timony | 1 | 1 |
| Mary and The Boy | 1 | 1 |
| María Huld Markan Sigfúsdóttir | 0 | 1 |
| Masal | 2 | 1 |
| Masha Qrella | 7 | 1 |
| Masonna | 1 | 1 |
| Masqualero | 1 | 1 |
| Massacre | 1 | 1 |
| Massimo Volume | 7 | 1 |
| Master Musicians of Bukkake | 6 | 1 |
| Master Musicians of Jajouka | 1 | 1 |
| Master P | 1 | 1 |
| Matchbox Twenty | 1 | 1 |
| Matching Mole | 2 | 1 |
| Mateo Alán Arreola | 1 | 1 |
| Matilde Casazola | 1 | 1 |
| Matisse & Sadko | 0 | 1 |
| Matt Ox | 7 | 1 |
| Matt Sweeney | 3 | 1 |
| Matt Wilson | 7 | 1 |
| Matthew Dear | 9 | 1 |
| Matthew Herbert | 17 | 1 |
| Matthew J. Rolin | 1 | 1 |
| Matthew Shipp | 83 | 1 |
| Matthew Young | 1 | 1 |
| Matthieu Michel | 1 | 1 |
| Mattin | 1 | 1 |
| Maul Tide | 1 | 1 |
| Maurice Louca | 0 | 1 |
| Mauricio Redolés | 1 | 1 |
| Maurizio Ben Omar | 1 | 1 |
| Max Nagl | 1 | 1 |
| Max Roach, His Chorus and Orchestra | 1 | 1 |
| Max Romeo | 38 | 1 |
| Max Steiner | 10 | 1 |
| Max Tundra | 3 | 1 |
| Maxïmo Park | 8 | 1 |
| May Blitz | 1 | 1 |
| Maya Deren | 1 | 1 |
| Maya Shenfeld | 0 | 1 |
| Mayo Thompson | 2 | 1 |
| Maysa | 1 | 1 |
| Mazen Kerbaj | 2 | 1 |
| Mbongwana Star | 1 | 1 |
| Mbé | 1 | 1 |
| Meagre Martin | 1 | 1 |
| Mean Creek | 1 | 1 |
| Medio Mutante | 6 | 1 |
| Mediæval Bæbes | 1 | 1 |
| Meek Mill | 12 | 1 |
| Meic Stevens | 1 | 1 |
| Meklit | 1 | 1 |
| Mel Tormé | 48 | 1 |
| Melanie De Biasio | 1 | 1 |
| Melissa Etheridge | 17 | 1 |
| Mellow Candle | 1 | 1 |
| Melvin Sparks | 14 | 1 |
| Melvin Van Peebles | 6 | 1 |
| Members Only | 1 | 1 |
| Men Without Hats | 0 | 1 |
| Menace Beach | 1 | 1 |
| Menomena | 5 | 1 |
| Mephiskapheles | 1 | 1 |
| Merchandise | 1 | 1 |
| Mercyful Fate | 8 | 1 |
| Meredydd Evans | 1 | 1 |
| Merima Ključo | 1 | 1 |
| Merit Hemmingson | 2 | 1 |
| Merkaba | 1 | 1 |
| Merkabah | 1 | 1 |
| Merle Travis | 2 | 1 |
| Merlyn Wood | 0 | 1 |
| Merope | 1 | 1 |
| Merry Airbrakes | 1 | 1 |
| Meryl Streek | 2 | 1 |
| Messa | 1 | 1 |
| Message | 1 | 1 |
| Mestre Môa do Katendê | 1 | 1 |
| Metrika | 6 | 1 |
| Metropole Orkest | 62 | 1 |
| Mette Henriette | 1 | 1 |
| Meursault | 7 | 1 |
| Mezquita | 2 | 1 |
| Mic Christopher | 1 | 1 |
| Micamac | 5 | 1 |
| Michael Bolton | 21 | 1 |