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| I Found God | What Now? | Nu Metal |
| I Know You Well Miss Clara | Chapter One | Fusion |
| I:Scintilla | Optic | Industrial |
| Iacopo Fedi & the Family Bones | Over the Nation | Rock Psichedelico |
| Iamthemorning | Lighthouse | Prog |
| Ian Hunter & the Rant Band | When I'm President | Rock |
| Ice | The Saga | Prog |
| Iced Earth | Framing Armageddon | Heavy Metal |
| Iced Earth | The Crucible of Man | Heavy Metal |
| Icon Of Coil | The Soul is in the Software / Access and... | EBM |
| Iconae | Live at the Church of the Holy Ghost | Gothic |
| Id Guinness | Cure For The Common Crush | Prog |
| Id Guinness | Soul Envy | Prog |
| Idea Ostile | ... Destabilizzazione in Corso... | Dark Rock |
| Iervolino Mimmo | Attimi di Cielo | Pop Italiano |
| If | Morpho Nestina | Prog |
| Ifsounds | Reset | Prog |
| Igzit Nine | Igzit Nine | Prog |
| Ikon | Destroying the World to Save It | Gothic |
| Il Branco Barracuda | Rurale | Rock Cantautorale |
| Il Buco del Baco | Sotto il Segno della Lampreda | Prog |
| Il Giardino Onirico | Apofenia | Prog |
| Il Giro Strano | Il Pianeta della Verità | Prog |
| Il Giudizio di Eleonora | Il Giudizio di Eleonora | Rock Italiano |
| Il Segno del Comando | Il Segno del Comando | Dark Rock |
| Il Segno del Comando | Il Volto Verde | Dark Rock |
| Il Segno del Comando | L'Incanto dello Zero | Dark Rock |
| Il Sentiero di Taus | Macrocosmosi | Prog |
| Il Silenzio delle Vergini | Su Rami di Diamante | Rock Elettronico |
| Il Silenzio delle Vergini | Fiori Recisi | Rock Elettronico |
| Il Silenzio delle Vergini | La Chiave di Berenice | Rock Elettronico |
| Il Testamento Degli Arcadi | Il Testamento Degli Arcadi | Prog |
| Il Tusco | Il Tusco feat. Luke Smith | Hard Rock |
| Ilid | The Shadow Over Arkham | Rock |
| Ill Niño | Enigma | Crossover |
| Illachime Quartet | I'm Normal, My Heart Still Works | Electronic |
| Illdisposed | The Prestige | Extreme Metal |
| Illuminate | Augen Blicke | Gothic |
| Illumion | Hunting For Significance | Prog |
| Illusion Suite | Final Hour | Prog Metal |
| Iluvatar | A Story Two Days Wide... | Prog |
| Imagin'Aria | Esperia | Prog |
| Imagin'Aria | Exeligere | Prog |
| Imaginery | Long Lost Pride | Heavy Metal |
| Impact | Demo 2007 | Prog |
| Impera | Legacy of Life | Hard Rock |
| Impressions Of Winter | Iuturna | Gothic |
| In Extremo | Sunder Ohne Zugel | Medioeval Metal |
| In Extremo | 7 | Medioeval Metal |
| In-Side | Out-Side | AOR |
| In Strict Confidence | Mistrust the Angels | EBM |
| In Strict Confidence | Where Sun and Moon Unite | EBM |
| In Strict Confidence | Exile Paradise | EBM |
| In The Labyrinth | One Trail to Heaven | Prog |
| In Tormentata Quiete | In Tormentata Quiete | Gothic |
| In Vino Veritas | Grimorium Magi | Medieval Rock |
| Index | Ao Vivo | Prog |
| Indigo Dying | Indigo Dying | AOR |
| Indukti | Idem | Prog Metal |
| Ines | The Flow / Slipping Into the Unknown | Prog |
| Infinity Overture | Kingdom of Utopia | Symphonic Metal |
| Inkubus Sukkubus | Supernature | Gothic |
| Inner Axis | Midnight Hunter / Steelbladed Avenger | Heavy Metal |
| Inner Quest | Inner Quest | Prog Metal |
| Inner Wish | Inner Strenght | Heavy Metal |
| Innocent Rosie | Bad Habit | Hard Rock |
| Inquire | Melancholia | Prog |
| Insonar | L’Enfant Et Le Mènure | Experimental |
| Intelligent Music Project | Sorcery Inside + Life Motion | AOR Prog |
| Interferenze | v1.1 & v1.2 | Punk Elettronico |
| Intergalactic Huso Orchestra | Spaced Out | Fusion |
| Interpose | Interpose | Prog |
| Interpose | Indifferent | Prog |
| Introitus | Elements | Prog |
| Introitus | Anima | Prog |
| Invertigo | Veritas | Prog |
| Iommi | Fused | Hard Rock |
| Ion | Madre, Protégenos | Ethereal |
| Ion | Immaculada | Ethereal |
| Ion Vein | Reigning Memories | Prog Metal |
| IQ | Subterranea (DVD) | Prog |
| IQ | Dark Matter | Prog |
| IQ | IQ20 (DVD) | Prog |
| IQ | Frequency | Prog |
| Irfan | Irfan | Ethno Goth |
| Irfan | Seraphim | Ethno Goth |
| Irfan | The Eternal Return | Ethno Goth |
| Iridio | Waves of Life | Medieval |
| Iridio | Endless Way | Medieval |
| Iron Kim Style | Iron Kim Style | Jazz Rock |
| Iron Maiden | The Book of Souls | Heavy Metal |
| Iron Mask | Shadow of the Red Baron | Virtuoso |
| Iron Mountain | Unum | Folk Metal |
| Isildurs Bane | Mind vol.2 live | Prog |
| Isildurs Bane | Mind vol.3 | Prog |
| Isproject | The Archinauts | Prog |
| Istant Flight | Colours & Lights | Prog |
| It Bites | The Tall Ships | Prog |
| IV Luna | Anteroom | Prog Metal |
| IV Luna | The Last Day Of An Ordinary Life | Prog Metal |
| IV Mirror | Under a Black Sun | Prog Metal |
| Ivan Mihaljevic & Side Effects | Recoil | Hard Rock |
| Ivanhoe | Lifeline | Prog Metal |
| Ivy Gold | Six Dusty Winds | Rock Blues |
| IWR | Ground Zero | EBM |
| IWR | Cold Asylum | EBM |
| IX | Ora Pro Nobis | Prog |
| Izzizzari Massimo | Unstable Balance | Virtuoso |