| Maailman lapset | Vihreän viserryskoneen musiikkia | 1973 | LP | |
| Maailmanloppu | Valtaa E.P. | 2013 | 7" | |
| Maailmanloppu | Elä! / Lasin Takana | 2014 | 7" | |
| Maailmanloppu | Haista vittu maailma E.P. | 2014 | 7" | |
| Maailmanloppu | Tuhon koodi | 2018 | MC | |
| Maailmanloppu / Kuudes silmä | Split ep | 2014 | 7" | |
| Macabre | Grim Reality | 1987 | CDEP | ≡ |
| Macabre | Gloom | 1989 | CD | ≡ |
| Macabre | Unabomber | 1999 | CDEP | |
| Macabre | Dahmer | 2000 | CD | |
| Macabre | Sinister Slaughter & Behind The Walls Of Sleep | 2000 | CD | ≡ |
| Macabre | Murder Metal | 2003 | CD | |
| Macabre | True Tales Of Slaughter And Slaying - Live In Holland | 2006 | DVD | ≡ |
| MacAlpine, Tony | Maximum Security | 1987 | LP | |
| MacAlpine, Tony | Evolution | 1995 | CD | |
| Machete, The | Demo 2004 | 2004 | CD | |
| Machine Head | Burn My Eyes | 1994 | CD | ≡ |
| Madhatter | Roadkill Romance | 2010 | CDEP | |
| Madhatter | Touch Of Red | 2012 | CDEP | |
| Madison Roam | Madison Roam | 2012 | CD | |
| Madvillain | Madvillainy | 2004 | 2LP | |
| Magenta Skycode | ||||| | 2006 | CD | |
| Magenta Skycode | We're Going To Climb | 2009 | 7" | ≡ |
| Magenta Skycode | Relief | 2010 | CD | ≡ |
| Maggot Priest | Panegyric Exaltations for the Glory of Cystic Infestation | 2020 | MC | |
| Maggotworks / Büfo | split | 2011 | 7" | |
| Magma | Mekanïk Destruktïw Kommandöh | 1973 | CD | |
| Magma | Köhntarkösz | 1974 | LP | |
| Magma | Live | 1975 | CD | |
| Magma | Üdü Wüdü | 1976 | CD | ≡ |
| Magma | Attahk | 1978 | CD | |
| Magma | Merci | 1984 | CD | |
| Magma | Retrospektïw III | 1992 | CD | |
| Magma | K.A. | 2004 | CD | ≡ |
| Magpie | Songs from a Bomb Shelter | 2014 | CD | ≡ |
| Magyar Posse | We Will Carry You Over The Mountains | 2002 | CD | |
| Magyar Posse | Kings Of Time | 2004 | CD | |
| Magyar Posse | Random Avenger | 2006 | CD | ≡ |
| Mahavishnu Ochestra, The | The Inner Mounting Flame | 1971 | CD | ≡ |
| Mahavishnu Ochestra, The | Birds Of Fire | 1973 | CD | ≡ |
| Maijanen, Pave | Palava sydän | 1985 | LP | |
| Major Label | ...And The Machines Will Never Wake Us | 2007 | CD | ≡ |
| Major Label | When I Am With You You Are Safe | 2009 | CD | |
| Malady | Toinen toista | 2018 | CD | |
| Malone, Sean | Cortlandt | 1996 | CD | ≡ |
| Malpractice | Frozen | 1996 | CDEP | |
| Malpractice | Of Shape And Balance | 1999 | CD | |
| Man-Eating Tree, The | Harvest | 2011 | CD+DVD | ≡ |
| Mana Mana | Totuus palaa | 1990 | LP | ≡ |
| Mana Mana | Complete... Kaikki | 2000 | CD | |
| Manboy | Stretch Your Religion | 2001 | CD | |
| Manboy | Blame The World | 2004 | CD | |
| Manboy | Majestic | 2006 | CD | |
| Mannhai | The Sons Of Yesterday's Black Grouse | 2001 | CD | |
| Mantereet | EP | 2012 | CDEP | |
| Mantovani | The Essential Collection | 2007 | 2CD | |
| Manzana | Nothing As Whole As A Broken Heart | 2007 | CD | |
| Mara Balls | Ratina Stadion Live '18 | 2018 | MC | |
| Marillion | Fugazi | 1984 | 2CD | ≡ |
| Marillion | Misplaced Childhood | 1985 | CD | |
| Marillion | Marillion.com | 1999 | CD | ≡ |
| Marlon Brändö | Winter Tires My Lost Teeth | 2011 | CDEP | |
| Mars Volta, The | Tremulant | 2002 | CDEP | ≡ |
| Mars Volta, The | De-Loused In The Comatorium | 2003 | CD | |
| Mars Volta, The | Frances The Mute | 2005 | CD | |
| Mars Volta, The | Amputechture | 2006 | CD | |
| Mars Volta, The | The Bedlam In Goliath | 2008 | CD | |
| Martikainen, Jarkko | Toivo | 2009 | CD | ≡ |
| Massive Attack | Blue Lines | 1991 | CD | |
| Massive Attack | Mezzanine | 1998 | CD | |
| Master | On The Seventh Day God Created Master | 1991 | CD | |
| Mastodon | Lifesblood | 2001 | CDEP | |
| Mastodon | Remission | 2003 | CD+DVD | |
| Mastodon | Leviathan | 2004 | CD+DVD | |
| Mastodon | Blood Mountain | 2006 | CD+DVD | |
| Mastodon | The Workhorse Chronicles | 2006 | DVD | |
| Mastodon | Crack The Skye | 2009 | CD+DVD | ≡ |
| Mastodon | Crack The Skye | 2009 | 2LP | ≡ |
| Mastodon | Divinations | 2009 | CDS | |
| Mastodon | Divinations | 2009 | 12" | ≡ |
| Mastodon | Oblivion | 2009 | CDS | |
| Mastodon | Live at the Aragon | 2011 | CD+DVD | |
| Mastodon | The Hunter | 2011 | LP | |
| Mastodon / Feist | Feistodon | 2012 | 7" | |
| Mats/Morgan Band | On Air With Guests | 2003 | CD | ≡ |
| Matti P | Save The King | 2008 | CD | ≡ |
| MattiP | The King Tape | 2015 | MC | |
| Mattlar, Marja | Vesi | 2000 | CD | ≡ |
| Mattlar, Marja | Lintu/Kehtolaulu | 2002 | CDS | |
| Mattlar, Marja | Polku | 2007 | CD | ≡ |
| Mattlar, Marja | Marja Mattlar - Varhaisten parhaita - Early Works | 2010 | CD | ≡ |
| maudlin of the Well | my Fruit PsychoBells... a seed combustible | 1999 | CD | ≡ |
| maudlin of the Well | my Fruit PsychoBells... a seed combustible | 1999 | CD | ≡ |
| maudlin of the Well | my Fruit PsychoBells... a seed combustible | 1999 | CD | |
| maudlin of the Well | my Fruit PsychoBells... a seed combustible | 1999 | 2LP | |
| maudlin of the Well | Bath | 2001 | CD | ≡ |
| maudlin of the Well | Bath | 2001 | CD | ≡ |
| maudlin of the Well | Bath | 2001 | CD | |
| maudlin of the Well | Leaving Your Body Map | 2001 | CD | ≡ |
| maudlin of the Well | Leaving Your Body Map | 2001 | CD | ≡ |
| maudlin of the Well | Leaving Your Body Map | 2001 | CD | |
| maudlin of the Well | The Secret Song | 2001 | CDS | ≡ |
| maudlin of the Well | Part the Second | 2009 | 2LP | ≡ |
| maudlin of the Well | Part the Second | 2009 | CD | |
| maudlin of the Well | LP Box | 2012 | Muu | ≡ |
| Maveth | Breath of an Abomination | 2011 | MC | |
| Max On The Rox | Voodoo | 2000 | CD | |
| Mayhem | De Mysteriis Dom Sathanas | 1994 | CD | |
| Mayhem | Grand Declaration Of War | 2000 | CD | ≡ |
| Mayhem | Ordo ad Chao | 2007 | CD | |
| MC Hammer | Please Hammer Don't Hurt 'Em | 1990 | LP | |
| Mechanism | Inspired Horrific | 2008 | CD | |
| Medeia | Quantum Holocaust World Domination | 2006 | CD | |
| Medeia | Medeia | 2008 | CDEP | ≡ |
| Megadeth | Killing Is My Business... ... And Business Is Good! | 1985 | CD | ≡ |
| Megadeth | Peace Sells... But Who's Buying? | 1986 | CD | |
| Megadeth | Rust In Peace | 1990 | CD | |
| Megadeth | Countdown To Extinction | 1992 | CD | |
| Megadeth | Train Of Consequences | 1994 | CDS | |
| Megadeth | Youthanasia | 1994 | CD | |
| Megadeth | Hidden Treasures | 1995 | CD | |
| Megadeth | Cryptic Writings | 1997 | CD | |
| Melvins | 26 Songs | 1986 | CD | ≡ |
| Melvins | Gluey Porch Treatments | 1987 | CD | ≡ |
| Melvins | Bullhead | 1991 | CD | |
| Melvins | Eggnog | 1991 | CDEP | |
| Melvins | Dale Crover | 1992 | CDEP | |
| Melvins | Joe Preston | 1992 | CDEP | |
| Melvins | King Buzzo | 1992 | CDEP | |
| Melvins | Melvins | 1992 | CD | |
| Melvins | Houdini | 1993 | CD | |
| Melvins | Stoner Witch | 1994 | CD | |
| Melvins | Stag | 1996 | CD | |
| Melvins | The Bootlicker | 1999 | CD | |
| Melvins | The Maggot | 1999 | CD | |
| Melvins | The Crybaby | 2000 | CD | |
| Melvins | Colossus Of Destiny | 2001 | CD | |
| Melvins | Hostile Ambient Takeover | 2002 | CD | |
| Melvins | Mangled Demos From 1983 | 2005 | CD | |
| Melvins | (A) Senile Animal | 2006 | CD | |
| Melvins | A Live History Of Gluttony And Lust | 2006 | CD | |
| Melvins | Nude With Boots | 2008 | CD | |
| Melvins | Chicken Switch | 2009 | CD | |
| Melvins | The Bride Screamed Murder | 2010 | CD | |
| Melvins | Tres Cabrones | 2013 | CD | |
| Melvins | Hold It In | 2014 | CD | |
| Melvins | Basses Loaded | 2016 | CD | |
| Melvins | A Walk With Love and Death | 2017 | 2CD | |
| Melvins | The Colossus of Destiny: A Melvins Tale | 2017 | 2DVD | |
| Melvins | Working With God | 2020 | CD | ≡ |
| Melvins + Lustmord | Pigs Of The Roman Empire | 2004 | CD | |
| Melvins Lite, The | Freak Puke | 2012 | CD | |
| Memfis | The Wind-Up | 2006 | CD | ≡ |
| Mercyful Fate | Mercyful Fate | 1982 | 12" | ≡ |
| Mercyful Fate | Melissa | 1983 | CD | |
| Mercyful Fate | Melissa | 1983 | LP | ≡ |
| Mercyful Fate | Don't Break The Oath | 1984 | LP | ≡ |
| Mercyful Fate | The Beginning | 1987 | CD | ≡ |
| Mercyful Fate | Return Of The Vampire | 1992 | CD | |
| Mercyful Fate | In The Shadows | 1993 | CD | |
| Mercyful Fate | The Bell Witch | 1994 | CDEP | |
| Mercyful Fate | Time | 1994 | CD | |
| Mercyful Fate | Into The Unknown | 1996 | CD | ≡ |
| Mercyful Fate | Dead Again | 1998 | CD | ≡ |
| Mercyful Fate | 9 | 1999 | CD | |
| Meshuggah | Destroy Erase Improve | 1995 | CD | |
| Meshuggah | The True Human Design | 1997 | CDEP | ≡ |
| Meshuggah | Chaosphere | 1998 | CD | |
| Meshuggah | Contradictions Collapse & None | 1998 | CD | ≡ |
| Meshuggah | Nothing | 2002 | CD | |
| Meshuggah | I | 2004 | CDEP | |
| Meshuggah | Catch Thirtythree | 2005 | CD | |
| Meshuggah | obZen | 2008 | CD | |
| Meshuggah | Alive | 2010 | CD+DVD | ≡ |
| Meshuggah | Koloss | 2012 | CD | |
| Meshuggah | The Violent Sleep Of Reason | 2016 | 2LP | |
| Metallica | Kill 'Em All | 1983 | 2LP | ≡ |
| Metallica | Ride The Lightning | 1984 | 2LP | ≡ |
| Metallica | Master Of Puppets | 1986 | CD | |
| Metallica | The $5.98 E.P. - Garage Days Re-Revisited | 1987 | 12" | |
| Metallica | ...And Justice For All | 1988 | CD | |
| Metallica | Enter Sandman | 1991 | CDS | |
| Metallica | Metallica | 1991 | CD | |
| Metallica | Load | 1996 | CD | |
| Metallica | Reload | 1997 | CD | |
| Metallica | Bay Area Thrashers - The Early Days | 1998 | CD | ≡ |
| Metallica | Garage Inc. | 1998 | 2CD | |
| Metallica | S&M | 1999 | 2CD | |
| Metallica | St. Anger | 2003 | CD+DVD | ≡ |
| Metallica | St. Anger | 2003 | CDS | |
| Metallica | Some Kind Of Monster | 2004 | 2DVD | |
| Metallica | The First 30 Years | 2012 | 7" | |
| Metallica & Lou Reed | Lulu | 2011 | 2CD | |
| Meters, The | The Very Best Of The Meters | 2001 | CD | ≡ |
| Metheny, Pat | Works | 1984 | LP | |
| Metsatöll | Hiiekoda | 2004 | CD | |
| Metsatöll | Äio | 2010 | CD | |
| Metsäkirkko | Metsäkirkko | 2018 | CD | |
| Mew | A Triumph For Man | 1997 | 2CD | ≡ |
| Mew | Half the World is Watching Me | 2000 | 2CD | ≡ |
| Mew | Frengers | 2003 | CD | |
| Mew | And The Glass Handed Kites | 2005 | CD | ≡ |
| Mew | No more stories Are told today I'm sorry They washed away... | 2009 | CD | |
| Mew | No More Stories EP | 2009 | CDEP | |
| Mgla | With Hearts Toward None | 2012 | CD | |
| Mgla | Excercises in Futility | 2015 | CD | |
| Mgla | Age of Excuse | 2019 | CD | |
| Mike & The Melvins | Three Men And A Baby | 2016 | CD | ≡ |
| Miller, Glenn And His Orchestra | The Glenn Miller Story | 1956 | 10" | |
| Mirror of Deception / Garden of Worm | split | 2009 | 12" | |
| Misery Index | Overthrow | 2001 | CDEP | ≡ |
| Misfits | American Psycho | 1997 | CD | |
| MNTTT | Instrumentals | 2015 | MC | |
| MNTTT (Eevil Stöö & Aztra) | Menetetyt | 2014 | MC | |
| Mokoma | Kurimus | 2003 | CD | |
| Mokoma | Punainen kukko | 2003 | CDEP | ≡ |
| Mokoma | Kuoleman laulukunnaat | 2006 | CD | |
| Mokoma | Juurta Jaksain | 2010 | CDEP | ≡ |
| Mondo Generator | A Drug Problem That Never Existed | 2003 | CD | |
| Monkey3 | Undercover | 2009 | CDEP | |
| Monster Magnet | Monolithic Baby! | 2004 | CD | ≡ |
| Moody Blues, The | Days Of Future Passed | 1967 | LP | |
| Moody Blues, The | In Search Of The Lost Chord | 1968 | LP | |
| Moody Blues, The | On The Threshold Of A Dream | 1969 | LP | |
| Moody Blues, The | To Our Children's Children's Children | 1969 | LP | |
| Moody Blues, The | A Question Of Balance | 1970 | LP | |
| Moody Blues, The | Every Good Boy Deserves Favour | 1971 | LP | |
| Moody Blues, The | Seventh Sojourn | 1972 | LP | |
| Moody Blues, The | Blue | 1989 | MC | |
| Moonsorrow | Tulimyrsky | 2008 | CDEP | ≡ |
| Moore, Kevin | Shine | 2010 | CD | ≡ |
| Moottorin jyrinä | On aika mennä nukkumaan | 2010 | CDS | |
| Moottörin jyrinä | Metallimyrsky | 2011 | CD | |
| Morbid Angel | Altars Of Madness | 1989 | CD | ≡ |
| Morbid Angel | Blessed Are The Sick | 1991 | CD | |
| Morbid Angel | Covenant | 1993 | CD | |
| Morbid Angel | Domination | 1995 | CD | |
| Morbid Angel | Heretic | 2003 | 2CD | |
| Morbific | Pestilent Hordes | 2020 | MC | |
| Morbific | Omnious Seep of Putridity | 2021 | MC | |
| Morbific | Squirm Beyond The Mortal Realm | 2022 | CD | |
| Morcheeba | Charango | 2002 | 2CD | |
| Morcheeba | Parts Of The Process | 2003 | CD | |
| Mordicus | Dances From Left | 1993 | MC | ≡ |
| MoRkObOt | MoRtO | 2008 | CD | |
| MoRkObOt | MoRbO | 2011 | CD | ≡ |
| MoRkObOt | GoRgO | 2016 | MC | |
| Morrissey | Suedehead: The Best Of Morrissey | 1997 | CD | |
| Mors Subita | Human Waste Compression | 2011 | CD | ≡ |
| Morse, Steve | Major Impacts | 2000 | CD | |
| Motelli Skronkle | Collection | 2000 | CD | |
| Motelli Skronkle | Juna | 2016 | LP | |
| Mother Goose / Sur-rur | split | 1998 | 7" | |
| Mothers of Invention, The | Freak Out! | 1966 | CD | ≡ |
| Mounier, Flo | Extreme Metal Drumming 101 | 2005 | 2DVD | |
| Mountain | Climbing! | 1969 | CD | |
| Mountain | Nantucket Sleighride | 1971 | LP | ≡ |
| Mountain | Avalanche | 1974 | LP | |
| Mountain | Twin Peaks | 1974 | CD | |
| Mr. Bungle | Bowl Of Chile | 1987 | CD | ≡ |
| Mr. Bungle | Mr. Bungle | 1991 | CD | |
| Mr. Bungle | Disco Volante | 1995 | CD | |
| Mr. Bungle | California | 1999 | CD | |
| Mr. Scruff | Trouser Jazz | 2002 | CD | |
| Mudhoney | Superfuzz Bigmuff | 1988 | 12" | ≡ |
| Mudhoney | Since We've Become Translucent | 2002 | CD | ≡ |
| Mudvayne | L.D. 50 | 2000 | CD | |
| Muggers, The | The Muggers Tapes | 1993 | CD | ≡ |
| Mummi Kutoo | Mummi Kutoo | 1975 | CD | ≡ |
| Murder Squad | Ravenous Murderous | 2003 | CD | |
| Murray, Dave | Drumset & other stuff | – | DVD | ≡ |
| Muse | Showbiz | 1999 | CD | |
| Muse | Origin Of Symmetry | 2001 | CD | |
| Muse | Plug In Baby | 2001 | CDS | |
| Muse | Hullabaloo | 2002 | 2CD | |
| Muse | Absolution | 2003 | CD | |
| Muse | Black Holes And Revelations | 2006 | CD | ≡ |
| Muse | Supermassive Black Hole | 2006 | CDS | |
| Muse | HAARP | 2008 | CD+DVD | |
| Muse | The Resistance | 2009 | CD | |
| Muse | Live at Rome Olympic Stadium | 2013 | CD+DVD | |
| Mustasuo | Katharsis | 2020 | MC | |
| Mustasuo | Hiljaisuus | 2022 | CD | |
| My Bloody Valentine | Loveless | 1991 | CD | |
| My Dying Bride | Turn Loose The Swans | 1993 | CD | ≡ |
| My Dying Bride | Like Gods Of The Sun | 1996 | CD | |
| My Dying Bride | 34.788%...Complete | 1998 | CD | ≡ |
| My Dying Bride | The Dreadful Hours | 2001 | CD | ≡ |
| My Dying Bride | For Darkest Eyes | 2002 | DVD | |
| Mystic Grave | Doom, Death, Darkness | 2008 | CDEP | |
| Mystic Grave | Mystigram | 2009 | CDEP | |
| Mythos | Moulded In Clay | 1993 | MC | ≡ |
| Mädätys | Demo 2022 | 2023 | MC | |
| Mäkelä, Taneli | Kielletty rakkaus | 1988 | MC | |
| MÖYHY-VEIKOT | 5,5%=5/5 | 2017 | MC | |
| Möyhy-Veikot | Mitä mieltä ufoista? | 2018 | MC | |
| Möyhy-Veikot | Huume Jet Set Life | 2019 | MC | |
| Möyhy-Veikot | CRYPTOVALUUTTA.COM | 2023 | CD | |
| Möyhy-Veikot | Top10 leffat | 2024 | LP | |
| Möyhy-Veikot / Lörsson | split | 2022 | 7" | |
