Here is a mostly-complete list of albums I recommend. Only one album is listed per artist, and it is listed as Artist - Album.

The specificity of the genres are somewhat debatable.

Whenever I find something new that I want to add, I’ll list it here.

HEAVY METAL

• Angel Witch - Angel Witch
• Anvil - Metal on Metal
• Black Sabbath - Mob Rules
• Def Leppard - Pyromania
• Diamond Head - Borrowed Time
• Dio - Holy Diver
• Ghost - Opus Eponymous
• Iron Maiden - Piece of Mind
• Iron Angel - Hellish Crossfire
• Ivory Tiger - Metal Mountain
• Judas Priest - Screaming For Vengeance
• Pantera - Projects in the Jungle
• Queensryche - The Warning
• Rainbow - Long Live Rock n’ Roll
• The Sword - Warp Riders
• Tank - Filth Hounds of Hades
• Twisted Sister- Stay Hungry
• Van Halen - Van Halen
• WASP - The Headless Children

DEATH METAL

• Allagaeon - Fragments of Form and Function
• Amon Amarth - Twilight of the Thunder God
• At the Gates - Slaughter of the Soul
• Autopsy - Severed Survival
• Benediction - Transcend the Rubicon
• Cancer - The Sins of Mankind
• Cannibal Corpse - Vile
• Carcass - Heartwork
• Death - Symbolic
• Decapitated - Nihility
• Decrepit Birth - Polarity
• Deicide - Deicide
• Demiurg - Slakthus Gamleby
• Dismember - Like An Ever Flowing Stream
• Entombed - Left Hand Path
• Facebreaker - Infected
• Fleshgod Apocalypse - Oracles
• Gorguts - Considered Dead
• Gory Blister - Skymorphosis
• In Mourning - Shrouded Divine
• Malevolent Creation - The Ten Commandments
• Merciless - Unbound
• Messiah - Choir of Horrors
• Monstrosity - Spiritual Apocalypse
• Morbid Angel - Blessed Are the Sick
• Necrophobic - The Nocturnal Silence
• Obscura - Omnivium
• Omnium Gatherum - New World Shadows
• Opeth - Blackwater Park
• Sentenced - Shadows of the Past
• Septic Flesh - The Great Mass
• Sinister - Diabolical Summoning
• Six Feet Under - Haunted
• Solstice - Solstice
• Therion - Beyond Sanctorum
• Vader - De Profundis

DOOM METAL

• Evoken - Antithesis of Light
• Swallow the Sun - The Morning Never Came
• Warning - Watching From a Distance

BLACK METAL

• A Hill To Die Upon - Infinite Titanic Immortal
• Celtic Frost - Monotheist
• Dark Funeral - The Secrets of the Black Arts
• Dimmu Borgir - Stormblast
• Emperor - In the Nightside Eclipse
• Gorgoroth - Under the Sign of Hell
• Immortal - Pure Holocaust
• Mayhem - De Mysteriis Dom Sathanas

THRASH & SPEED METAL

• Angelus Apatrida - Clockwork
• Annihilator - Alice In Hell
• Anthrax - Among the Living
• Artillery - By Inheritance
• Coroner - Mental Vortex
• Cyclone Temple - I Hate, Therefore I Am
• Devastation - Idolatry
• Exodus - Bonded by Blood
• Flotsam & Jetsam - No Place for Disgrace
• Hallows Eve - Monument
• Hatchet - Awaiting Evil
• Havok - Time is Up
• Heathen - Victims of Deception
• Kat - 666
• Metal Church - The Dark
• Megadeth - Rust In Peace
• Metallica - Ride the Lightning
• Onslaught - In Search of Sanity
• Sepultura - Beneath the Remains
• Slayer - Seasons in the Abyss
• Stone - Stone
• Testament - Practice What You Preach
• Trivium - Ascendancy
• Venom - Welcome to Hell

POWER & PROG METAL

• Blind Guardian - Somewhere Far Beyond
• Iced Earth - Horror Show
• Nightwish - Wishmaster
• Persuader - The Hunter
• Savatage - Hall of the Mountain King
• Sonata Arctica - Silence
• Symphony X - The Divine Wings of Tragedy