| M. WARD | songwriter, folk | songwriter |
| M.I.A. | pop, global, dance, hip-hop, elettronica | popmuzik |
| M83 | shoegaze | popmuzik |
| MACCABEES | alt-pop-rock | popmuzik |
| MACHINE HEAD | groove-metal | rockedintorni |
| MACY GRAY | r'n'b | popmuzik |
| MADONNA | pop-dance | popmuzik |
| MADREDEUS | world music, pop | popmuzik |
| MAGAZINE | post-punk, elettro-pop | popmuzik |
| MAGIC LANTERN - SUN ARAW - SUPER MINERALS | altrisuoni | altrisuoni |
| MAGMA | jazz-rock | rockedintorni |
| MAGNETIC FIELDS - STEPHIN MERRITT | pop | popmuzik |
| MANIC STREET PREACHERS | pop-rock | popmuzik |
| MANOWAR | heavy metal | rockedintorni |
| MANSUN/PAUL DRAPER | alt-pop/rock | popmuzik |
| MANU CHAO | pop-rock | popmuzik |
| MAREK GRECHUTA | folk, chamber-pop, jazz-rock, progressive rock | songwriter |
| MARIA MCKEE - LONE JUSTICE | cowpunk, folk, country, songwriter, art-rock | songwriter |
| MARILLION | progressive, rock | rockedintorni |
| MARILYN MANSON | industrial-rock | dark |
| MARINA AND THE DIAMONDS | indie-pop, elettro-pop, songwriter | popmuzik |
| MARIPOSA | alt-rock | italia |
| MARISSA NADLER | folk | songwriter |
| MARK LANEGAN | songwriter, alt-folk | songwriter |
| MARLENE KUNTZ | alt-rock | italia |
| MARS VOLTA | prog-rock | rockedintorni |
| MARVIN GAYE | soul | songwriter |
| MASSIMO BUBOLA | songwriter | italia |
| MASSIMO VOLUME | post-rock, alt-rock, songwriting | italia |
| MASSIVE ATTACK | trip-hop | popmuzik |
| MASTODON | sludge-metal, progressive-metal, thrash-metal | rockedintorni |
| MATIA BAZAR | pop, synth-pop | italia |
| MATT ELLIOTT | folk-rock | songwriter |
| MATTHEW HERBERT | elettronica, house, avantgarde | elettronica |
| MAX FUSCHETTO | modern classical | italia |
| MAYHEM | dark | dark |
| MC5 | garage-rock | rockedintorni |
| MEAT PUPPETS | alt-rock | rockedintorni |
| MEGADETH | metal | rockedintorni |
| MEKONS | post-punk, folk | rockedintorni |
| MERCURY REV | psichedelia, pop | rockedintorni |
| MERCYFUL FATE | dark-metal | dark |
| MEREDITH MONK | avantgarde | altrisuoni |
| MERZ | songwriter | songwriter |
| MESHUGGAH | prog-metal, thrash-metal, death-metal, djent | rockedintorni |
| METALLICA | metal | rockedintorni |
| METZ | post-hardcore, post-grunge | rockedintorni |
| MEW | pop-rock, prog, dream-pop | popmuzik |
| MICAH P. HINSON | songwriter | songwriter |
| MICHAEL JACKSON | pop, funky | popmuzik |
| MICHAEL NYMAN | avanguardia | altrisuoni |
| MIDLAKE | folk-rock | rockedintorni |
| MIGHTY BABY | psych-blues-prog | rockedintorni |
| MIKE KINSELLA | post-hard-core, emo, songwriter | rockedintorni |
| MIKE OLDFIELD | rock, new age | songwriter |
| MINA | funk-pop | popmuzik |
| MINA | pop, jazz, swing, songwriter | italia |
| MINIMAL MAN | dark | dark |
| MINISTRY | industrial | dark |
| MINOR THREAT | hardcore | rockedintorni |
| MINUTEMEN | hardcore-punk | rockedintorni |
| MIRAH | songwriter | songwriter |
| MISFITS | dark-punk | dark |
| MISSION | gothic-rock | dark |
| MISSION OF BURMA | alt-rock | rockedintorni |
| MODENA CITY RAMBLERS | folk-rock | italia |
| MODERN ENGLISH | new wave | dark |
| MODEST MOUSE | indie-rock | rockedintorni |
| MOGWAI | post-rock | rockedintorni |
| MOJAVE 3 | dream-folk-pop | popmuzik |
| MONO | post-rock | rockedintorni |
| MONROE MUSTANG | slo-core, psych-folk | rockedintorni |
| MONSTER MAGNET | stoner-rock | rockedintorni |
| MOONSPELL | gothic-metal | dark |
| MORPHINE | rock | rockedintorni |
| MOTORHEAD | metal | rockedintorni |
| MOTORPSYCHO | psych-rock | rockedintorni |
| MOUSE ON MARS | kraut-rock | elettronica |
| MUDHONEY - MARK ARM | punk-rock, grunge | rockedintorni |
| MUM | elettronica | popmuzik |
| MURCOF | elettronica | elettronica |
| MUSE | alt-rock, progressive pop | rockedintorni |
| MUSLIMGAUZE | industrial, etno-ambient, elettronica | altrisuoni |
| MY BLOODY VALENTINE | shoegaze | dark |
| MY CHEMICAL ROMANCE | emo, pop, punk | popmuzik |
| M¥SS KETA | pop | italia |
