| Artist | | M-Opus | | M. Efekt | | Maailmanpuu | | Mabel Greer's Toyshop | | Macado, Machy | | Macalpine, Tony | | Maccagnan, Marcelo | | MacDonald, Bryan | | MacHacek | | Machacek, Alex | | Machado, Luis Alberto | | Machiavel | | Machine And The Synergetic Nuts | | Machine Mass | | Machines Dream | | Macìa, Manoel | | Mackay, Duncan | | Mackenzie Theory | | Macleuri, André | | Macre, Joe | | Macro Marco | | Macroscream | | Mad Crayon | | Mad Fellaz | | Madárfogás | | Madder Lake | | Made In Sweden | | Made of Water | | Madelgaire | | Madonia, Dean | | Madrigal | | Mads Vinding Group | | Mae, Vanessa | | Maelström Percussion Ensemble | | Maestoso | | Magdalena | | Magdalena Solis | | Magellan | | Magellan Music | | Magenta | | Magenta w/Annie Haslam | | Maggiore, Giorgio | | Magia Nera | | Magic Bus | | Magic Elf, The | | Magic Pie | | Magicfolk | | Magician's Red | | Magick Brother & Mystic Sister | | Magik Saturn | | Maglev | | Magma | | Magnesis | | Magnetic Sound Machine | | Magnetophone | | Magnolia | | Magnus, Nick | | Mägo de Oz | | Magrathea | | Magus | | Mahagon | | Mahavishnu Orchestra | | Mahavishnu Project | | Mahjun | | Mahogany Frog | | Mahtrak | | Maiden uniteD | | Main, Bruce | | Mainhorse | | Mainhorse Airline | | Majestic | | Major Parkinson | | Makajodama | | Making Minds | | makkiwhipdies | | Makoto Kitayam with Shingets.. | | Makovsky, Milos | | Malaavia | | Malabriega | | Malady | | Malheiros, Alex | | Malherbe, Didier | | Malibran | | Malicorne | | Malitz, Marc | | Malmsteen, Yngwie | | Malone, Sean | | Maloney, Mack | | Mamma Non Piangere | | Mammoth | | Man | | Man In Space | | Man Jumping | | Man On Fire | | Manaf, Tesla | | Mancebo, Rodrigo | | Mancunian Candidate | | Mancuso, Matteo | | Mandala | | Mandalaband | | Mandibulbe | | ManDoki Soulmates | | Mandrake | | Mandrake Project | | Mandy Morton And Spriguns | | Maneige | | Manfred Mann | | Manfred Mann Chapter III | | Manfred Mann's Earth Band | | Mangala Vallis | | Mangione, Chuck | | Mangler, Holle | | Mangrove | | Manna/Mirage | | Mannheim Steamroller | | Manning | | Manning, Guy | | Manring, Michael | | Mantel, Eric | | Manticore | | Mantler, Michael | | Mantra Vega | | Mantras, The | | Mantric Muse | | Manugen | | Manzanera, Phil | | Manzarek, Ray | | Maps & Atlases | | Maquina | | maquinas | | Mar de Robles | | Marathon | | Marbin | | Marblewood | | March | | Marchesi Scamorza | | Marching Mind | | Marekvist | | Marillion | | Mark Dean's Caldera | | Mark Kelly's Marathon | | Mark Murdock & Dmitry M. Epstein | | Mark Wingfield & Gary Husband | | Mark Wingfield with Jane Chapman and Adriano Adewale | | Markus Reuter & Stefano Castagna | | Markus Venehsalo & Mavon Safia | | Markusfeld, Alain | | Marotta Griesgraber | | Mars Hollow | | Mars Red Sky | | Mars Volta, The | | Marshall, Mike & Darol Anger | | Marsupial | | Marsupilami | | Marsyas | | Martigan | | Martin, Felix | | Martinelli, Kevin | | Martini Henry | | Martino, Pat | | Martino, Rob | | Martinoia, Julien | | Martone, Dave | | Marty Z | | Martz, Jasun | | Marvelous Kid | | Mary Newsletter | | Marygold | | Masal | | Maschera Di Cera, La | | Maschine | | Maserati | | Masfel | | Masheen Messiah | | Mask | | Mask Of Confidence | | Mason, Nick | | Masque | | Mass Of The Sun | | Massimo Mazzeo & Paolo Sommariva | | Massive Attack | | Massois, Gerald | | Masson, Colin | | Massoud Godemann Trio | | Master Of Ceremony | | Master's Apprentice | | Mastermind | | Matching Mole | | Mater Dea | | Material | | MaterialEyes | | Materya | | Matharu, Jay | | Mathematicians | | Mathews, Thom | | Matos, Alejandro | | Matraz | | Matrix | | Mats/Morgan | | Matsui, Kazu | | Matsumoto, Tak | | Matthews, Ethan Janais | | Mattsson | | Maudlin Of The Well | | Maupin, Bennie | | Mauro Martello & Sezione Frenante | | Maury E I Pronomi | | Mavara | | Max Webster | | Maximum Indifference | | Maxophone | | Maxwell's Demon | | May, Nick | | Maya | | Maybeshewill | | Mayfair | | Mays, Lyle | | Maze of Sound | | Maze of Time | | McBride, Brian | | McBride, Christian Band | | McDonald & Giles | | McGill, Scott | | McGill, Scott's Hand Farm | | McGill-Manring-Stevens | | McGregor, Isamu | | McKechnie, Simon | | McLaughlin, John | | McLuhan | | McStine & Minnemann | | Meade, Laura | | Meat Cafe Vol. 3 | | Medea | | Medeski, Martin, and Wood | | Medeski, Scofield, Martin, and Wood | | MediaBanda | | Meer | | Mehldau, Brad | | Mehra, Varun | | Mehran | | Meier, Nicolas | | Melange | | Meles Lutra | | Mélia | | Melilotus | | Meliora | | Meller, Maciej | | Mellow Candle | | Melting Clock | | Melting Euphoria | | Melvin's Nosehair | | MeM | | Memoriance | | Memories Of Machines | | Men of Lake | | Menayeri | | Mendoza, Pablo | | Meniscus | | Menn, Gretchen | | Mentat Routage | | Mercer | | Mercury Program, The | | Mercury Tree, The | | Meret | | Merging Cluster | | Meridian Incident | | Meridian Voice | | Merlin Bird, The | | Mermaid Kiss | | Mertanen, Janne | | Mertens, Wim | | MesaVerde | | Mescaliner | | Mesmerising | | Mess | | Messenger | | Meta | | Metabolisme | | Metaconciencia | | Metamorfosi | | Metamorphosis | | Metaphor | | MetaQuorum | | Metheny, Pat | | Methexis | | Metronhomme | | Metus | | Mew | | Mezquita | | Mezzodi, Flavio | | MFTJ | | MIA | | Mice On Stilts | | Michael Bernier & Ritchie DeCarlo | | Mickey Hart Band | | Micromassé | | Microscopic Septet | | Mid Atlantic Title | | Midas | | Midas Fall | | Midgley, Gordon | | Midnight Sun | | Might Could | | Migraine | | Mihrax | | Mike Stern & Jeff Lorber Fusion | | Mike, Chris | | Mikromidas | | Milburn, Lloyd | | Mildlife | | Mile Marker Zero | | Miles, Barry | | Milhaven | | Milla | | Millenium | | Millennium Trilogy Project | | Miller, Dominic | | Miller, Marcus | | Miller, Phil | | Miller, Rick | | Miller, Roger Clark | | Millo, Mario | | Milton Man Gogh | | Mimes On Rollercoasters | | Minami Deutsch | | Minasian, David | | Mind Furniture | | Mind Gallery | | Mind Portal | | Mind Split Effect | | Mindfield | | Mindflower | | Mindflowers | | Mindgames | | Mindscrub | | Mindspeak | | Mindwalk | | Mindworm | | Minimum Vital | | Mink, Ben | | Minnemann, Marco | | Minor Giant | | Minstrel's Ghost, The | | Minutian | | Mirage | | Miriodor | | Mirlitorrinco | | Mirror | | Mirthkon | | Mirthrandir | | Misa Micevski Group | | Misfits of Sythia | | Missing Link | | Missus Beastly | | Mist Season | | Mitchell, Kenny | | Mitchell, Larry | | Mizmar | | Mizukagami | | Mizutani, Kimio | | MJ12 | | MMCircle | | MO. DO. | | mobiUS | | Mobius Strip | | Modern-Rock Ensemble | | Modest Midget | | Modry Efekt | | Moebius Brain | | Moebius Cat | | Moerlen, Pierre | | MoeTar | | Mogador | | Mogul Thrash | | Mogwai | | Mohodisco | | Moizan, Gerald | | Mojo Pojo | | Moksha | | Mold, Colin | | Moleslope | | Mollmaskin | | Molly Tigre | | Molvaer, Nils Petter | | Mona Lisa | | Monarch Trail | | Mondo Drag | | Mongol | | Monkey3 | | Mono | | Monobody | | Monolith Orchestra | | Monomyth | | Montaña Electrica | | Montana Skies | | Montechiari Project | | Montefeltro | | Montfort, Matthew | | Montreux | | Montrose | | Montrose, Ronnie | | Moody Blues, The | | Moogg | | Moon Duo | | Moon Fog Prophet | | Moon Halo | | Moon Letters | | Moon Men | | Moon Safari | | MOON X | | Mooncake | | Moongarden | | Moonparticle | | Moonrise | | Moonshine Blast | | Moonsoon | | Moonstriker | | Moonswing | | Moonwagon | | Moor, The | | Moore, Kevin | | Moore, Steve | | Moraine | | Moraz Alban Project | | Moraz, Pat / John Wetton / Bill Bruford | | Moraz, Patrick | | Moraz, Patrick + Bill Bruford | | Mordecai Smyth | | Morfe | | Morgan | | Morgen Jass | | Morglbl | | Morild | | Morph | | Morphelia | | Morpheus | | Morreale | | Morrigan, The | | Morrison, Liam | | Morse Code | | Morse, Alan | | Morse, Neal | | Morse, Steve | | Morse, Tim | | Mortality | | Morte Macabre | | Mosaic | | Mosher, Scott | | Mostly Autumn | | Moth | | Moth Vellum | | Mother Black Cap | | Mother Gong | | Mother Mallard's Portable Masterpiece Co. 1970 - 1973 | | Mother Turtle | | Mothertongue | | Mothlite | | Motian, Paul | | Motiffe | | Motis | | Moto Perpetuo | | Motorpsycho | | Motorpsycho and Jaga Jazzist | | Motschmann, Johannes | | Moulettes | | Moulin, Marc | | Moundrag | | Mountain Mirrors | | Mourning Knight | | Mouse On The Keys | | Mouzon, Alphonse | | Move, The | | Movements, The | | Movers | | Moving Gelatine Plates | | Mr Averell | | Mr. Brown | | Mr. Gil | | Mr. Hyde | | Mr. Putiferio | | Mr. Sirius | | Mr. So & So | | Mr. Toad | | Mrs. Fun | | MRW | | MSA Project | | Mucchio, Il | | MudWay | | Muffins, The | | Mugen | | Mujician | | Mukerji, Rahul | | Mulder, Eddie | | Multi Story | | Multi-Story | | Multifuse | | Mumpbeak | | Munju | | Munoz, Jonathan | | Murdock, Mark | | Murky Red | | Muros De Agua | | Murple | | Mururoa | | Museo Rosenbach | | Mushroom | | Mushy | | Musica Ficta | | Musique Noise | | Mussi, Cristiano | | Mutantes | | Mute Albino | | Mute Gods, The | | Mutesite | | Muthspiel, Wolfgang | | Muvovum | | MVI | | My Brother The Wind | | My Education | | My Name Is Janet | | My Sleeping Karma | | My Solid Ground | | My Tricksy Spirit | | Myriad | | Myster Möbius | | Mysteria Noctis | | Mysteries of the Revolution | | Mystery | | Myth of Logic | | Myth of Progress | | Mythology | | Mythopoeic Mind | | Mythos |
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| Album | Year |  | Case | 2012 |
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= Song added within the past days