1. M.S.G. "M.S.G." (1992)
2. Macalpine, Tony "Edge Of Insanity" (1986)
3. Mace "Process of Elimination" (1985) + "The Evil in Good" (1987) [2005 "Double Album CD" combined CD release]
4. Machine "What Are You Looking At?" (2000)
5. Machine Head "Burn My Eyes" (1994)
6. Machine Head "The More Things Change..." (1997)
7. Machine Head "The Burning Red" (1999)
8. Machine Head "Supercharger" (2001)
9. Machine Head "Through The Ashes Of Empires" (2003)
10. Machine Head "The Blackening" (2007)
11. Machine Head "Unto The Locust" (2011)
12. Machine Head "Bloodstone & Diamonds" (2014)
13. Madball "Demonstrating My Style" (1996) + "Look My Way" (1998) [2007 combined CD release]
14. Mad Max "Rolling Thunder" (1984)
15. Mad Season "Above" (1995)
16. Magrudergrind/Shitstorm "Split" [split] (2008)
17. Malefactor "Death Falls Silent" (2002)
18. Malevolent Creation "Invidious Dominion" (2010)
19. Malevolent Creation "Dead Man's Path" (2015) [Limited Edition Digipak with 2 bonus tracks]
20. Malice "In The Beginning..." (1985)
21. Malmsteen, Yngwie J. "Rising Force" (1984)
22. Malmsteen, Yngwie J. "Marching Out" (1985)
23. Malmsteen, Yngwie J. "Collection" [compilation] (1991) [or is this the 2005 "Collection", or something else?]
24. Mammoth Grinder "Extinction Of Humanity" (2009)
25. Mammoth Grinder "Underworlds" (2013)
26. Manic Street Preachers "Generation Terrorists" (1992)
27. Manngard "Circling Buzzards" (2006)
28. Mantas [pre-Death Chuck Schuldiner band] "Death By Metal" [compilation] (2012) [contains "Death By Metal" [demo version 1], "Death By Metal" [demo version 2], rehearsal early 1984]
29. Marduk "La Grande Danse Macabre" (2001)
30. Marduk "World Funeral" (2003) [2014 remastered edition w/six bonus tracks]
31. Marduk "Serpent Sermon" (2012)
32. Marduk "Frontschwein" (2015)
33. Marilyn Manson "Portrait Of An American Family" (1994)
34. Marilyn Manson "Smells Like Children" (1995)
35. Marilyn Manson "Antichrist Superstar" (1996)
36. Marilyn Manson "Mechanical Animals" (1998)
37. Marilyn Manson "Holywood" (2000)
38. Marilyn Manson "The Golden Age of Grotesque" (2003)
39. Marilyn Manson "Eat Me, Drink Me" (2007)
40. Marilyn Manson "The High End Of Low" (2009)
41. Marilyn Manson "Born Villain" (2012)
42. Marilyn Manson "The Pale Emporer" (2015)
43. Mars Volta, The "Frances The Mute" (2005) [gave to Lee?]
44. Marshall Law "Marshall Law" (1989)
45. Mary Beats Jane "Mary Beats Jane" (1994)
46. Masquerade "Flux" (2001)
47. Massacre "From Beyond" (1991)
48. Massacre "Promise" (1996)
49. Massacre "Back From Beyond" (2014) [Special Edition w/two bonus tracks]
50. Masters Of Reality "Sunrise On The Sufferbus" (1992)
51. Mastodon "Call Of The Mastodon" (2006) [compiles early tracks - from "Lifesblood" EP (alternate versions?), "Mastodon" 7" vinyl and "9 Song Demo"]
52. Mastodon "Remission" (2002)
53. Mastodon "Leviathan" (2004)
54. Mastodon "Blood Mountain" (2006)
55. Mastodon "Crack The Skye" (2009)
56. Mastodon "The Hunter" (2011)
57. Mastodon "Once More 'Round the Sun" (2014)
58. Mastodon "Emperor Of Sand" (2017)
59. Mastodon "Cold Dark Place" [EP] (2017)
60. Mastodon "Medium Rarities" (2020)
61. Mastodon "Hushed And Grim" (2021) [2CD]
62. Mayhem "De Mysteriis Dom Sathanas" (1994)
63. Mayhem "Grand Declaration Of War" (2000) [jewel box & Necropolis digipack]
64. Mayhem "Esoteric Warfare" (2014)
65. Mayhem "Daemon" (2019)
66. MC5 "The Best Of The MC5" [homemade compilation CDR]
67. MD5 "The Craving" (????) [do I have the 1996 11-track version with Lee Ving vocals, or 2004 remastered 14-track version with Dave Mustaine on vocals?]
68. Megadeth "Killing Is My Business... And Business Is Good" (1985)
69. Megadeth "Peace Sells... But Who's Buying?" (1986)
70. Megadeth "So Far, So Good... So What!" (1988)
71. Megadeth "Rust In Peace" (1990)
72. Megadeth "Countdown To Extinction" (1992)
73. Megadeth "Youthanasia" (1994)
74. Megadeth "Hidden Treasures" [EP] (1995) [compilation of non-album tracks]
75. Megadeth "Cryptic Writings" (1997)
76. Megadeth "Risk" (1999) + "Risk Extra Value CD" [compilation] (1999) [sleeved]
77. Megadeth "The World Needs A Hero" (2001)
78. Megadeth "The System Has Failed" (2004)
79. Megadeth "Greatest Hits" [compilation] (2005)
80. Megadeth "United Abominations" (2007)
81. Megadeth "Endgame" (2009)
82. Megadeth "Th1rt3en" (2011)
83. Megadeth "Super Collider" (2013) [with prismatic cover and three bonus tracks]
84. Megadeth "Dystopia" (2016)
85. Megadeth "The Sick, The Dying... And The Dead!" (2022)
86. Melechesh "The Epigenesis" (2010)
87. Meliah Rage "Kill To Survive Plus 4 Bonus Tracks" (1988)
88. Meliah Rage "Solitary Solitude" (1990)
89. Meliah Rage "Death Valley Dream" (1996)
90. Melvins "Gluey Porch Treatments" (1986)
91. Melvins "Ozma" (1989) + "Gluey Porch Treatments" (1986) [?CD compilation? ????]
92. Melvins "Stoner Witch" (1994)
93. Melvins "Stag" (1996)
94. Melvins "Colossus Of Destiny" [live] (2001)
95. Melvins+Fantomas (AKA The Fantomas Melvins Big Band) "Millenium Monsterwork 2000" [live] (2002)
96. Melvins "(A) Senile Animal" (2006)
97. Melvins "The Bride Screamed Murder" (2010)
98. Melvins (Lite) "Freak Puke" (2012)
99. Melvins "Everybody Loves Sausages" (2013) [covers]
100. Melvins "1991 - 1999" [homemade compilation CDR]
101. Melvins "More Of The Melvins" [homemade compilation CDR]
102. Melvins 1983, The "Tres Cabrones" (2013)
103. Melvins, The "Hold It In" (2014)
104. Mental Hippie Blood "Pounds" (1994)
105. Mental Home "Upon The Shores Of Inner Seas" (2000)
106. Mentors, The "Up The Dose" (1986) + "You Axed For It" (1985) [CD release 1989; missing four tracks]
107. Merauder "Master Killers: A Complete Anthology" [2-disc compilation] (2007)
108. Mercenary "11 Dreams" (2004)
109. Mercenary "The Hours That Remain" (2006)
110. Mercyful Fate "Melissa" (1983) + "The Beginning" ["Nuns Have No Fun" + 5 rare tracks] (1987) [?CD compilation ????]
111. Mercyful Fate "Don't Break The Oath" (1984)
112. Mercyful Fate "Return Of The Vampire" [compilation] (1992) [rare demo tracks from 1982]
113. Mercyful Fate "In The Shadows" (1993)
114. Mercyful Fate "Time" (1994)
115. Mercyful Fate "Into The Unknown" (1996)
116. Mercyful Fate "Dead Again" (1998)
117. Mercyful Fate "9" (1999)
118. Mercyless "Abject Offerings" (1992)
119. Mercyless "Sure To Be Pure" (2000)
120. Meshuggah "Contradictions Collapse" (1991) + "None" [EP] (1994) [?CD compilation 1999]
121. Meshuggah "Chaosphere" (1998) ["Reloaded", 2008 re-release with 5 bonus tracks]
122. Meshuggah "Rare Trax" [compilation] (2001)
123. Meshuggah "Nothing" (2002) [2006 re-recording with DVD]
124. Meshuggah "I" [EP] (2004)
125. Meshuggah "Catch Thirtythr33" (2005)
126. Meshuggah "Obzen" (2008)
127. Meshuggah "Koloss" (2012)
128. Meshuggah "The Violent Sleep Of Reason" (2016)
129. Messe Noir "Mandal - Gate Of The Calling" (1998)
130. Metal Church "Metal Church" (1984)
131. Metal Church "The Dark" (1986)
132. Metal Church "Blessing In Disguise" (1989)
133. Metal Church "The Human Factor" (1991)
134. Metal Church "Hanging In The Balance" (1993)
135. Metal Church "Masterpeace" (1999)
136. Metal Church "The Weight Of The World" (2004)
137. Metal Church "A Light In The Dark" (2006)
138. Metal Church "This Present Wasteland" (2008)
139. Metal Church "Generation Nothing" (2013)
140. Metal Church "XI" (2016)
141. Metal Church "Damned If You Do" (2018)
142. Metal Church "From The Vault" (2020)
143. Metal Church "Congregation Of Annihilation" (2023)
144. Metalium "Millennium Metal - Chapter One" (1999)
145. Metalium "As One - Chapter Four" (2004) + "Hero Nation - Chapter Three" (2002) [2CD US Edition]
146. Metallica "No Life 'Til Leather/Outtakes With Dave Mustaine 82-83" [demo/?] (1982/?) [CDR]
147. Metallica "Kill 'Em All" (1983)
148. Metallica "Ride The Lightning" (1984)
149. Metallica "Master Of Puppets" (1986)
150. Metallica "The $9.98 CD - Garage Days Re-Revisited" [EP] (1987)
151. Metallica "...And Justice For All" (1988)
152. Metallica "Metallica" (1991)
153. Metallica "Interview 1992 (Lars Ulrich)" [interview] (1992) [unofficial release]
154. Metallica "Live Shit: Binge & Purge" [boxset; live] (1993) [3CD]
155. Metallica "Vol. 2" [compilation] (1995) [Germany, unofficial release]
156. Metallica "Load" (1996)
157. Metallica "Reload" (1997)
158. Metallica "The Early Days" [compilation] (1997) [unofficial release]
159. Metallica "Garage Inc." [compilation] (1998) [2CD; covers]
160. Metallica "Turn The Page" [single] (1998)
161. Metallica "Garage Days Pt. II" [compilation] (1996) [bootleg]
162. Metallica "S&M" [live] (1999)
163. Metallica "St. Anger" (2003)
164. Metallica "Death Magnetic" (2008)
165. Metallica, Lou Reed & "Lulu" (2011)
166. Metallica "Beyond Magnetic" [EP] (2011)
167. Metallica "Hardwired... To Self-Destruct" (2016) [Deluxe 3 CD Set with 14 bonus tracks]
168. Metallica "S&M2" [live] (2020) [2CD]
169. Metallica "72 Seasons" (2023)
170. Metroid Metal "Varia Suite" (2009)
171. Metroid Metal "EP" [AKA "Expansion Pack"] (2010)
172. Metroid Metal "Other Album" (2014)
173. Midwinter "Loss Of Light" [demo] (2002)
174. Miller, Richard Neal "Waiting For The Tide" (2002)
175. Mindcollapse "Vampires Dawn" (2001)
176. Mindfunk "Mindfunk" (1991)
177. Ministry "Twitch" (1986)
178. Ministry "The Land Of Rape And Honey" (1988)
179. Ministry "The Mind Is A Terrible Thing To Taste" (1989)
180. Ministry "Psalm 69" (1992)
181. Ministry "Filth Pig" (1996)
182. Ministry "Dark Side Of The Spoon" (1999)
183. Ministry "The Fall/Reload" [single?] (1995??/1996?)
184. Ministry "Animositisomina" (2003)
185. Ministry "Houses Of The Molé" (2004)
186. Ministry "Rio Grande Blood" (2006)
187. Ministry "The Last Sucker" (2007)
188. Ministry "Cover Up" [covers] (2008)
189. Ministry And Co-Conspirators "Undercover" [covers] (2010)
190. Ministry "Relapse" (2012)
191. Ministry "AmeriKKKant" (2018)
192. Ministry "Moral Hygiene" (2021)
193. Minor Threat "Complete Discography" [compilation] (1989)
194. Misery Index "Retaliate" (2003)
195. Misery Loves Company "Misery Loves Company" (1994)
196. Misery Loves Company "Not Like Them" (1997)
197. Misfits, The "Walk Among Us" (1982)
198. Misfits, The "Box Set" [compilation] (1996) [4CDs, collects "Misfits" (AKA "Collection I") (1986), "Collection II" [compilation] (1995) "Legacy of Brutality" [compilation] (1985), "Evilive" (1987), "Earth A.D./Wolfs Blood" (1983), "Static Age" (1997), and rare and unreleased studio tracks]
199. Misfits, The "American Psycho" (1997)
200. Misfits, The "Famous Monsters" (1999)
201. Misfits, The "Cuts From The Crypt" [compilation] (2001)
202. Misfits, The "The Devil's Rain" (2011)
203. Mr. Plow "Head On" (2000)
204. Mist, The "Gottverlassen" (1995)
205. Mistress "Mistress" (2002)
206. Mitra "All Gods Kill" (2006)
207. Mnemic "Mechanical Spin Phenomena" (2003)
208. Mnemic "The Audio Injected Soul" (2004)
209. Mnemic "Passenger" (2007)
210. Mnemic "Sons Of The System" (2010)
211. Mnemic "Mnemesis" (2012)
212. Module "Shatter: Official Videogame Soundtrack" (2009)
213. Moonspell "Wolfheart" (1995) [2007 2CD re-release w/nine bonus live tracks]
214. Moonspell "Irreligious" (1996)
215. Moonspell "Sin/Pecado" (1998)
216. Moonspell "Darkness And Hope" (2001)
217. Moonspell "The Antidote" (2003)
218. Moonspell "Alpha Noir/Omega White" (2012) [2CD]
219. Moonspell "Extinct" (2015)
220. Moonspell "Hermitage" (2021)
221. Morbid Angel "Altars Of Madness" (1989)
222. Morbid Angel "Blessed Are The Sick" (1991)
223. Morbid Angel "Covenant" (1993)
224. Morbid Angel "Domination" (1995)
225. Morbid Angel "Formulas Fatal To The Flesh" (1998)
226. Morbid Angel "Gateways To Annihilation" (2000)
227. Morbid Angel "Heretic" (2003)
228. Morbid Angel "Illud Divinum Insanus" (2011)
229. Morgion "Solinari" (1999)
230. Morgoth "The Eternal Fall/Resurrection Absurd" [EP/EP] (1990/1989)
231. Morgoth "Odium" (1993)
232. Morgoth "Ungod" (2015)
233. Morissette, Alanis "Jagged Little Pill" (1995)
234. Mortician "Zombie Apocalypse" [EP] (1998)
235. Motherstone "Through The Paths Of Insanity" (2006)
236. Motionless in White "When Love Met Destruction" [EP] (2009) [different takes, but album has all these songs]
237. Motionless in White "Creatures" (2010)
238. Motionless in White "Infamous" (2012)
239. Motionless in White "Reincarnate" (2014)
240. Mötley Crüe "Too Fast For Love" (1981)
241. Mötley Crüe "Shout At The Devil" (1983)
242. Mötley Crüe "Theater Of Pain" (1985)
243. Motograter "Motograter" (2003)
244. Motörhead "Motörhead" (1977) [does it contain the "Beer Drinkers and Hell Raisers" EP tracks?]
245. Motörhead "Overkill" (1979) [does it have "Louie Louie" as a bonus track?]
246. Motörhead "Bomber" (1979)
247. Motörhead "On Parole" [recorded 1976, but unreleased for three years] (1979) [1997 version with 4 bonus tracks]
248. Motörhead "Ace Of Spades" (1980) [does it contain the "St. Valentine's Day Massacre" EP tracks?]
249. Motörhead "Iron Fist" (1982)
250. Motörhead "Another Perfect Day" (1983)
251. Motörhead "No Remorse" [compilation] (1984) [original? or re-release with "Under The Knife" etc? does it contain the "Stand By Your Man" EP tracks?]
252. Motörhead "Orgasmatron" (1986)
253. Motörhead "Rock 'N' Roll" (1987)
254. Motörhead "1916" (1991)
255. Motörhead "March Ör Die" (1992)
256. Motörhead "Bastards" (1993)
257. Motörhead "Sacrifice" (1995)
258. Motörhead "Overnight Sensation" (1996)
259. Motörhead "Snake Bite Love" (1998)
260. Motörhead "We Are Motörhead" (2000)
261. Motörhead "Hammered" (2002)
262. Motörhead "Inferno" (2004)
263. Motörhead "Kiss Of Death" (2006)
264. Motörhead "Motörizer" (2008)
265. Motörhead "The World Is Yours" (2010)
266. Motörhead "Aftershock" (2013)
267. Motörhead "Bad Magic" (2015)
268. Motorpsycho "Wrenched" (1992)
269. Mourning Beloved "A Disease For The Ages" (2008)
270. Mouth "Foreword" [EP?] (1993)
271. Mozart, Wolfgang "Amadeus Soundtrack" (1991)
272. Mucupurulent "Soul Reaver" (2002)
273. Mudvayne "L.D. 50" (2000)
274. Mudvayne "The Beginning Of All Things To End" [compilation] (2001) [contains "Kill, I Oughta" demo, 2 remixes and 2 live tracks]
275. Mudvayne "The End Of All Things To Come" (2002)
276. Mudvayne "Lost And Found" (2005)
277. Mudvayne "The New Game" (2008)
278. Municipal Waste "Massive Aggressive" (2009)
279. Municipal Waste "The Fatal Feast: Waste In Space" (2012)
280. Municipal Waste "Slime And Punishment" (2017)
281. Murder Construct "Results" (2012)
282. Murderdolls "Beyond The Valley Of The Murderdolls" (2002)
283. Murderdolls "Women And Children Last" (2010)
284. Murdered "...And The Maggots Shall Inherit The Earth" (2006)
285. Mushroomhead "XX" (2001)
286. Mushroomhead "XIII" (2003)
287. Mushroomhead "Beautiful Stories For Ugly Children" (2010)
288. Mushroomhead "The Righteous and the Butterfly" (2014)
289. My Dying Bride "As The Flower Withers" (1992)
290. My Dying Bride "Like Gods Of The Sun" (1996)
291. My Dying Bride "Meisterwerk II" (2001)
292. My Dying Bride "For Lies I Sire" (2009)
293. My Dying Bride "A Map Of All Our Failures" (2012)
294. Mystick Krewe Of Clearlight, The "The Mystick Krewe Of Clearlight" (2000)