  | 
Corrupted | 
  | 
Se hace por los sueños asesinos (2004) | 
  | 
  | 
Sludge Metal, Doom Metal | 
- | 
0 | 
  | 
Kylesa | 
  | 
No Ending / a 110° Heat Index (2004) [EP] | 
  | 
  | 
Progressive Sludge Metal, Psychedelic Sludge Metal | 
- | 
0 | 
  | 
Melvins | 
  | 
Neither Here nor There (2004) [Compilation] | 
  | 
  | 
Sludge Metal, Alternative Rock, Experimental Noise | 
- | 
0 | 
  | 
Eyehategod / Cripple Bastards | 
  | 
I Am the Gestapo / Self-Zeroing (2004) [Split] | 
  | 
  | 
Sludge Metal, Doom Metal, Grindcore | 
- | 
0 | 
  | 
Black Label Society | 
  | 
Hangover Music Vol. VI (2004) | 
  | 
  | 
Sludge Metal, Southern Metal | 
- | 
0 | 
  | 
Isis | 
  | 
Oceanic Remixes Volume I (2004) [EP] | 
  | 
  | 
Atmospheric Sludge Metal, Post-Metal | 
- | 
0 | 
  | 
Isis | 
  | 
Oceanic Remixes Volume II (2004) [EP] | 
  | 
  | 
Atmospheric Sludge Metal, Post-Metal | 
- | 
0 | 
  | 
The Locust | 
  | 
Follow the Flock, Step in Shit (2004) [EP] | 
  | 
  | 
Noisecore, Noise Rock Sludge Metal, Powerviolence | 
- | 
0 | 
  | 
Neurosis | 
  | 
The Eye of Every Storm (2004) | 
  | 
  | 
Progressive Sludge Metal, Post-Metal, Post-Hardcore, Tribal, Ambient | 
- | 
0 | 
  | 
Harvey Milk | 
  | 
The Kelly Sessions (2004) [Compilation] | 
  | 
  | 
Experimental Sludge Metal, Stoner Metal | 
- | 
0 | 
  | 
Melvins | 
  | 
Pigs of the Roman Empire (2004) | 
  | 
  | 
Sludge Metal, Dark Ambient | 
- | 
0 | 
  | 
Isis | 
  | 
Oceanic Remixes Volume III (2004) [EP] | 
  | 
  | 
Atmospheric Sludge Metal, Post-Metal | 
- | 
0 | 
  | 
Old Man Gloom | 
  | 
Christmas (2004) | 
  | 
  | 
Sludge Metal, Ambient, Post-Hardcore, Atmospheric Sludge Metal, Ambient, Post-Rock, Dark Ambient, Drone | 
- | 
0 | 
  | 
Mastodon | 
  | 
Leviathan (2004) | 
  | 
  | 
Progressive Sludge Metal | 
92.5 | 
2 | 
  | 
Cult of Luna | 
  | 
Salvation (2004) | 
  | 
  | 
Atmospheric Sludge Metal, Post-Metal | 
- | 
0 | 
  | 
Isis | 
  | 
Panopticon (2004) | 
  | 
  | 
Atmospheric Sludge Metal, Post-Metal | 
- | 
0 | 
  | 
The Ocean | 
  | 
fluXion (2004) | 
  | 
  | 
Sludge Metal, Progressive Metal, Experimental Metal | 
- | 
0 | 
  | 
Big Business | 
  | 
Head for the Shallow (2004) | 
  | 
  | 
Heavy Metal, Sludge Metal | 
- | 
0 | 
  | 
Bongzilla | 
  | 
Contamination Festival 2003 (2004) [Live] | 
  | 
  | 
Sludge Metal, Doom Metal, Stoner Metal | 
- | 
0 | 
  | 
Isis | 
  | 
Oceanic Remixes Volume IV (2004) [EP] | 
  | 
  | 
Atmospheric Sludge Metal, Post-Metal | 
- | 
0 | 
  | 
Monarch | 
  | 
Monarch (2005) | 
  | 
  | 
Sludge Metal | 
- | 
0 | 
  | 
Avenged Sevenfold / Mastodon | 
  | 
Mastodon / Avenged Sevenfold (2005) [Split] | 
  | 
  | 
Progressive Sludge Metal, Metalcore, Heavy Metal | 
- | 
0 | 
  | 
Torche | 
  | 
Demo CD (2005) [Demo] | 
  | 
  | 
Stoner Metal, Sludge Metal | 
- | 
0 | 
  | 
Thou | 
  | 
Call No Man Happy Until He Is Dead (2005) [Demo] | 
  | 
  | 
Sludge Metal, Drone Metal, Doom Metal | 
- | 
0 | 
  | 
Jesu | 
  | 
Jesu (2005) | 
  | 
  | 
Drone Metal, Shoegaze, Post-Metal, Post-Rock, Atmospheric Sludge Metal | 
- | 
0 | 
  | 
Crowbar | 
  | 
Lifesblood for the Downtrodden (2005) | 
  | 
  | 
Sludge Metal | 
- | 
0 | 
  | 
High on Fire / Ruins | 
  | 
High on Fire / Ruins (2005) [Split] | 
  | 
  | 
Sludge Metal, Stoner Metal, Math Rock, Avant-Prog, Zeuhl | 
- | 
0 | 
  | 
Naked City | 
  | 
Naked City: the Complete Studio Recordings (2005) [Boxed set] | 
  | 
  | 
Avant-garde, Grindcore, Noise, Punk Jazz, Free Jazz, Sludge Metal, Drone Metal, Doom Metal | 
- | 
0 | 
  | 
Black Label Society | 
  | 
Mafia (2005) | 
  | 
  | 
Sludge Metal, Southern Metal | 
- | 
0 | 
  | 
Torche | 
  | 
Torche (2005) | 
  | 
  | 
Stoner Metal, Sludge Metal | 
- | 
0 |